Items where authors include "Harrison, P."
Article
Tyrer, F., Gharibzadeh, S., Gillies, C. et al. (1306 more authors) (2025) Incidence of diabetes mellitus following hospitalisation for COVID-19 in the United Kingdom: A prospective observational study. Diabetes, Obesity and Metabolism: A Journal of Pharmacology and Therapeutics, 27 (2). pp. 767-776. ISSN 1462-8902
Gharibzadeh, S., Routen, A., Razieh, C. et al. (1382 more authors) (2025) Long term health outcomes in people with diabetes 12 months after hospitalisation with COVID-19 in the UK: a prospective cohort study. eClinicalMedicine, 79. 103005. ISSN 2589-5370
Taquet, M., Skorniewska, Z., De Deyn, T. et al. (1085 more authors) (2024) Cognitive and psychiatric symptom trajectories 2–3 years after hospital admission for COVID-19: a longitudinal, prospective cohort study in the UK. The Lancet Psychiatry, 11 (9). P696-708. ISSN 2215-0366
Lawson, C.A., Moss, A.J., Arnold, J.R. et al. (1341 more authors) (2024) Long COVID and cardiovascular disease: a prospective cohort study. Open Heart, 11 (1). e002662. ISSN 2053-3624
Liew, F., Efstathiou, C. orcid.org/0000-0001-6125-8126, Fontanella, S. et al. (1457 more authors) (2024) Large-scale phenotyping of patients with long COVID post-hospitalization reveals mechanistic subtypes of disease. Nature Immunology, 25 (4). pp. 607-621. ISSN 1529-2908
Elneima, O., McAuley, H.J.C., Leavy, O.C. et al. (1398 more authors) (2024) Cohort Profile: Post-Hospitalisation COVID-19 (PHOSP-COVID) study. International Journal of Epidemiology, 53 (1). dyad165. ISSN 0300-5771
Elneima, O. orcid.org/0000-0003-2480-8840, McAuley, H.J.C. orcid.org/0000-0001-8997-0764, Leavy, O.C. et al. (1398 more authors) (2024) Cohort profile: post-hospitalisation COVID-19 (PHOSP-COVID) study. International Journal of Epidemiology, 53 (1). dyad165. ISSN 0300-5771
Lord, J.M., Veenith, T., Sullivan, J. et al. (1020 more authors) (2024) Accelarated immune ageing is associated with COVID-19 disease severity. Immunity & Ageing, 21. 6. ISSN 1742-4933
Lord, J.M., Veenith, T., Sullivan, J. et al. (1020 more authors) (2024) Accelarated immune ageing is associated with COVID-19 disease severity. Immunity & Ageing, 21. 6. ISSN 1742-4933
Taquet, M., Skorniewska, Z., Zetterberg, H. orcid.org/0000-0003-3930-4354 et al. (1262 more authors) (2023) Post-acute COVID-19 neuropsychiatric symptoms are not associated with ongoing nervous system injury. Brain Communications, 6 (1). fcad357. ISSN 2632-1297
Taquet, M., Skorniewska, Z., Zetterberg, H. orcid.org/0000-0003-3930-4354 et al. (1262 more authors) (2023) Post-acute COVID-19 neuropsychiatric symptoms are not associated with ongoing nervous system injury. Brain Communications, 6 (1). fcad357. ISSN 2632-1297
Brightling, C.E., Evans, R.A., Singapuri, A. et al. (1049 more authors) (2023) Long COVID research: an update from the PHOSP-COVID Scientific Summit. The Lancet Respiratory Medicine, 11 (11). e93-e94. ISSN 2213-2600
Raman, B., McCracken, C., Cassar, M.P. et al. (1038 more authors) (2023) Multiorgan MRI findings after hospitalisation with COVID-19 in the UK (C-MORE): a prospective, multicentre, observational cohort study. The Lancet Respiratory Medicine, 11 (11). pp. 1003-1019. ISSN 2213-2600
Kahavita, K.D.H.N. orcid.org/0000-0002-6662-6925, McCarthy, E.D. orcid.org/0000-0002-2038-2929, Zhang, M. orcid.org/0000-0002-6864-3024 et al. (2 more authors) (2023) Characterising the shear resistance of a unidirectional non-crimp glass fabric using modified picture frame and uniaxial bias extension test methods. International Journal of Material Forming, 16 (5). 49. ISSN 1960-6206
Jackson, C., Stewart, I.D., Plekhanova, T. et al. (1082 more authors) (2023) Effects of sleep disturbance on dyspnoea and impaired lung function following hospital admission due to COVID-19 in the UK: a prospective multicentre cohort study. The Lancet Respiratory Medicine, 11 (8). pp. 673-684. ISSN 2213-2600
Zheng, B., Vivaldi, G. orcid.org/0000-0003-0816-9276, Daines, L. orcid.org/0000-0003-0564-4000 et al. (1040 more authors) (2023) Determinants of recovery from post-COVID-19 dyspnoea: analysis of UK prospective cohorts of hospitalised COVID-19 patients and community-based controls. The Lancet Regional Health - Europe, 29. 100635. ISSN 2666-7762
Zheng, B., Vivaldi, G. orcid.org/0000-0003-0816-9276, Daines, L. orcid.org/0000-0003-0564-4000 et al. (1040 more authors) (2023) Determinants of recovery from post-COVID-19 dyspnoea: analysis of UK prospective cohorts of hospitalised COVID-19 patients and community-based controls. The Lancet Regional Health - Europe, 29. 100635. ISSN 2666-7762
Jackson, C., Stewart, I.D., Plekhanova, T. et al. (1082 more authors) (2023) Effects of sleep disturbance on dyspnoea and impaired lung function following hospital admission due to COVID-19 in the UK: a prospective multicentre cohort study. The Lancet Respiratory Medicine. ISSN 2213-2600
Liew, F. orcid.org/0000-0002-8736-9198, Talwar, S., Cross, A. et al. (1439 more authors) (2023) SARS-CoV-2-specific nasal IgA wanes 9 months after hospitalisation with COVID-19 and is not induced by subsequent vaccination. eBioMedicine, 87. 104402. ISSN 2352-3964
Hill, J., Lee, S., Morton, D. et al. (543 more authors) (2022) Colorectal Endoscopic Stenting Trial (CReST) for obstructing left-sided colorectal cancer: randomized clinical trial. British Journal of Surgery, 109 (11). pp. 1073-1080. ISSN 0007-1323
Barkham, M. orcid.org/0000-0003-1687-6376, Saxon, D., Hardy, G.E. et al. (20 more authors) (2021) Clinical and cost-effectiveness of person-centred experiential therapy vs. cognitive behavioural therapy for moderate and severe depression delivered in the English Improving Access to Psychological Therapies national programme: a pragmatic randomised non- inferiority trial [PRaCTICED]. The Lancet Psychiatry, 8 (6). pp. 487-499. ISSN 2215-0366
Harrison, P., Tosey, P., Anderson, V. et al. (1 more author) (2020) HRD professional education provision in the UK: past, present and future. Human Resource Development International, 24 (2). pp. 200-218. ISSN 1367-8868
Harrison, P. orcid.org/0000-0002-5039-7822, Hardy, G.E. orcid.org/0000-0002-9637-815X and Barkham, M. orcid.org/0000-0003-1687-6376 (2019) The relationship between expected engagement and talking therapy outcome. Clinical Psychology and Psychotherapy, 26 (4). pp. 492-501. ISSN 1063-3995
Arce Vargas, F., Furness, A.J.S., Litchfield, K. et al. (249 more authors) (2018) Fc effector function contributes to the activity of human anti-CTLA-4 antibodies. Cancer Cell, 33 (4). 649-663.e4. ISSN 1535-6108
Rocke, A.S., Paterson, G.G., Barber, M.T. et al. (11 more authors) (2018) Erratum to: Thromboelastometry and platelet function during acclimatisation to high altitude. Thrombosis and Haemostasis, 118 (4). 801. ISSN 0340-6245
Rocke, A.S., Paterson, G.G., Barber, M.T. et al. (11 more authors) (2018) Thromboelastometry and Platelet Function during Acclimatization to High Altitude. Thrombosis and Haemostasis, 118 (1). pp. 63-71.
Saxon, D., Ashley, K., Bishop-Edwards, L. et al. (17 more authors) (2017) A pragmatic randomised controlled trial assessing the non-inferiority of counselling for depression versus cognitive-behaviour therapy for patients in primary care meeting a diagnosis of moderate or severe depression (PRaCTICED): Study protocol for a randomised controlled trial. Trials, 18 (1). p. 93.
Thokala, P., Simpson, E., Tappenden, P. et al. (4 more authors) (2016) Ledipasvir-Sofosbuvir for treating Chronic Hepatitis C: A NICE Single Technology Appraisal - An Evidence Review Group Perspective. PharmacoEconomics, 34 (8). pp. 741-750. ISSN 1170-7690
Johnson, B., Lowe, G.C., Futterer, J. et al. (31 more authors) (2016) Whole exome sequencing identifies genetic variants in inherited thrombocytopenia with secondary qualitative function defects. Haematologica. ISSN 0390-6078
Big-Alabo, A., Harrison, P. and Cartmell, M.P. (2015) Algorithm for the solution of elastoplastic half-space impact: Force-indentation linearisation method. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 229 (5). pp. 850-858. ISSN 0954-4062
Adams, D., Collaboration, M., Adey, D. et al. (144 more authors) (2013) Characterisation of the muon beams for the Muon Ionisation Cooling Experiment. EUROPEAN PHYSICAL JOURNAL C, 73 (10). ARTN 2582. ISSN 1434-6044
Eyre, S., Hinks, A., Flynn, E. et al. (13 more authors) (2009) Confirmation of association of the REL locus with rheumatoid arthritis susceptibility in the UK population. Annals of the Rheumatic Diseases, 69 (8). 1572 - 1573. ISSN 0003-4967
Puangmali, T., Califano , M. and Harrison, P. (2009) The effect of small elongations on the electronic and optical signatures in InAs nanocrystal quantum dots. Journal of Physics: Condensed Matter, 21 (14). 144212 (5pp). ISSN 1361-648X
Moontragoon, P., Vukmirovic, N., Ikonic, Z. et al. (1 more author) (2009) Electronic structure and optical transitions in Sn and SnGe quantum dots in a Si matrix. Microelectronics Journal, 40 (3). pp. 483-485. ISSN 0026-2692
Isic, G., Milanovic, V., Radovanovic, J. et al. (3 more authors) (2009) Nonparabolicity effects and the spin-split electron dwell time in symmetric III-V double-barrier structures. Microelectronics Journal, 40 (3). pp. 611-614. ISSN 0026-2692
Puangmali, T., Califano, M. and Harrison, P. (2008) Interband and intraband optical transitions in InAs nanocrystal quantum dots: A pseudopotential approach. Physical Review B, 78 (24). 245104 (pp 10). ISSN 1098-0121
Evans, C.A., Indjin, D., Ikonic, Z. et al. (4 more authors) (2008) Thermal modeling of terahertz quantum-cascade lasers: comparison of optical waveguides. IEEE Journal of Quantum Electronics, 44 (7). pp. 680-685. ISSN 0018-9197
Moontragoon, P., Vukmirović, N., Ikonić, Z. et al. (1 more author) (2008) Electronic structure and optical properties of Sn and SnGe quantum dots. Journal of Applied Physics, 103 (10).
Steed, R., Matthews, M., Plumridge, J. et al. (7 more authors) (2008) Saturation of intersubband transitions in p-doped GaAs/AlGaAs quantum wells. Applied Physics Letters, 92 (18).
Vukmirovic, N., Indjin, D., Ikonic, Z. et al. (1 more author) (2008) Electron transport and terahertz gain in quantum-dot cascades. IEEE Photonics Technology Letters, 20 (2). pp. 129-131. ISSN 10411135
Reeder, R., Ikonić, Z., Harrison, P. et al. (2 more authors) (2007) Laterally pumped GaAs/AlGaAs quantum wells as sources of broadband terahertz radiation. Journal of Applied Physics, 102 (073715). ISSN 1089-7550
Savić, I., Vukmirović, N., Ikonić, Z. et al. (4 more authors) (2007) Density matrix theory of transport and gain in quantum cascade lasers in a magnetic field. Physical Review B, 76 (165310). ISSN 1550-235x
Moontragoon, P., Ikonic, Z. and Harrison, P. (2007) Band structure calculations of Si–Ge–Sn alloys: achieving direct band gap materials. Semiconductor Science and Technology, 22 (7). pp. 742-748. ISSN 1361-6641
Lazic, I., Ikonic, Z., Milanovic, V. et al. (3 more authors) (2007) Electron transport in n-doped Si/SiGe quantum cascade structures. Journal of Applied Physics, 101. 093703. ISSN 1089-7550
Califano, M., Vinh, N.Q., Phillips, P.J. et al. (10 more authors) (2007) Interwell relaxation times in p-Si/SiGe asymmetric quantum well structures: the role of interface roughness. Physical Review B, 75 (4). Art. No. 045338. ISSN 1550-235x
Evans, C.A., Jovanović, V.D., Indjin, D. et al. (2 more authors) (2006) Thermal effects in InGaAs/AlAsSb quantum-cascade lasers. Optoelectronics - IEE Proceedings, 153 (6). pp. 287-292. ISSN 1350-2433
Ikonic, Z., Lazic, I., Milanovic, V. et al. (3 more authors) (2006) n-Si/SiGe quantum cascade structures for THz emission. Journal of Luminescence, 121 (2). pp. 311-314. ISSN 0022-2313
Evans, C.A., Jovanovic, V.D., Indjin, D. et al. (2 more authors) (2006) Investigation of thermal effects in quantum-cascade lasers. IEEE Journal of Quantum Electronics, 42 (9). pp. 859-867. ISSN 0018-9197
McTavish, J., Indjin, D. and Harrison, P. (2006) Aspects of the internal physics of InGaAs/InAlAs quantum cascade lasers. Journal of Applied Physics, 99 (11). 114505-(6 pages). ISSN 1089-7550
Fu, L., Tan, H.H., McKerracher, I. et al. (4 more authors) (2006) Effects of rapid thermal annealing on device characteristics of InGaAs/GaAs quantum dot infrared photodetectors. Journal of Applied Physics, 99 (11). 114517-(8 pages). ISSN 1089-7550
Jovanovic, V.D., Hofling, S., Indjin, D. et al. (5 more authors) (2006) Influence of doping density on electron dynamics in GaAs/AlGaAs quantum cascade lasers. Journal of Applied Physics, 99 (10). 103106-(9 pages). ISSN 1089-7550
Ikonic, Z., Harrison, P. and Kelsall, R.W. (2006) Electric field domains in p-Si/SiGe quantum cascade structures. IEEE Transactions on Electron Devices, 53 (2). pp. 189-195. ISSN 0018-9383
Vukmirovic, N., Ikonic, Z., Jovanovic, V.D. et al. (2 more authors) (2005) Optically pumped intersublevel midinfrared lasers based on InAs-GaAs quantum dots. IEEE Journal of Quantum Electronics, 41 (11). pp. 1361-1368. ISSN 0018-9197
Savic, I., Milanovic, V., Vukmirovic, N. et al. (4 more authors) (2005) Magnetic field tunable terahertz quantum well infrared photodetector. Journal of Applied Physics, 98 (8). 084509-(8 pages). ISSN 1089-7550
Evans, C.A., Jovanovic, V.D., Indjin, D. et al. (2 more authors) (2005) Design and simulation of InGaAs/AlAsSb quantum-cascade lasers for short wavelength emission. Applied Physics Letters, 87 (141109). ISSN 0003-6951
Vukmirovic, N., Indjin, D., Jovanovic, V.D. et al. (2 more authors) (2005) Symmetry of k·p Hamiltonian in pyramidal InAs/GaAs quantum dots: Application to the calculation of electronic structure. Physical Review B: Condensed Matter and Materials Physics, 72 (7). 075356(10). ISSN 1550-235X
Cechavicius, B., Kavaliauskas, J., Krivaite, G. et al. (5 more authors) (2005) Photoreflectance and surface photovoltage spectroscopy of beryllium-doped GaAs/AlAs multiple quantum wells. Journal of Applied Physics, 98 (2). 023508-(8 pages). ISSN 1089-7550
Radovanovic, J., Milanovic, V., Ikonic, Z. et al. (2 more authors) (2005) Electron-phonon relaxation rates and optical gain in a quantum cascade laser in a magnetic field. Journal of Applied Physics, 97 (10). 103109 -(5 pages). ISSN 1089-7550
Vukmirovic, N., Jovanovic, V.D., Indjin, D. et al. (3 more authors) (2005) Optically pumped terahertz laser based on intersubband transitions in a GaN/AlGaN double quantum well. Journal of Applied Physics, 97 (10). 103106-(5 pages). ISSN 1089-7550
Harrison, P., Indjin, D., Jovanovic, V.D. et al. (7 more authors) (2005) A physical model of quantum cascade lasers: Application to GaAs, GaN and SiGe devices. Physica Status Solidi (A): Applied Research, 202 (6). pp. 980-986. ISSN 1521-396X
Mircetic, A., Indjin, D., Ikonic, Z. et al. (3 more authors) (2005) Towards automated design of quantum cascade lasers. Journal of Applied Physics, 97 (8). 084506-(7 pages). ISSN 1089-7550
Ikonic, Z., Harrison, P. and Kelsall, R.W. (2004) Self-consistent energy balance simulations of hole dynamics in SiGe/Si THz quantum cascade structures. Journal of Applied Physics, 96 (11). pp. 6803-6811. ISSN 1089-7550
Savic, I., Milanovic, V., Ikonic, Z. et al. (3 more authors) (2004) Dilute magnetic semiconductor quantum-well structures for magnetic field tunable far-infrared/terahertz absorption. IEEE Journal of Quantum Electronics, 40 (11). pp. 1614-1621. ISSN 0018-9197
Jovanovic, V.D., Harrison, P., Ikonic, Z. et al. (1 more author) (2004) Physical model of quantum-well infrared photodetectors. Journal of Applied Physics, 96 (10). pp. 269-272. ISSN 1089-7550
Radovanovic, J., Milanovic, V., Ikonic, Z. et al. (3 more authors) (2003) Optimal design of GaN-AlGaN Bragg-confined structures for intersubband absorption in the near-infrared spectral range. IEEE Journal of Quantum Electronics, 39 (10). pp. 1297-1304. ISSN 0018-9197
Indjin, D., Ikonic, Z., Harrison, P. et al. (1 more author) (2003) Surface plasmon waveguides with gradually doped or NiAl intermetallic compound buried contact for terahertz quantum cascade lasers. Journal of Applied Physics, 94 (5). pp. 3249-3252. ISSN 1089-7550
Jovanovic, V.D., Ikonic, Z., Indjin, D. et al. (3 more authors) (2003) Designing strain-balanced GaN/AlGaN quantum well structures: Application to intersubband devices at 1.3 and 1.55 mu m wavelengths. Journal of Applied Physics, 93 (6). pp. 3194-3197. ISSN 1089-7550
Indjin, D., Harrison, P., Kelsall, R.W. et al. (1 more author) (2003) Self-consistent scattering model of carrier dynamics in GaAs-AlGaAs terahertz quantum-cascade lasers. IEEE Photonics Technology Letters, 15 (1). pp. 15-17. ISSN 1041-1135
Harrison, P., Indjin, D. and Kelsall, R.W. (2002) Electron temperature and mechanisms of hot carrier generation in quantum cascade lasers. Journal of Applied Physics, 92 (11). pp. 6921-6923. ISSN 1089-7550
Zheng, W.M., Halsall, M.P., Harmer, P. et al. (2 more authors) (2002) Acceptor binding energy in delta-doped GaAs/AlAs multiple-quantum wells. Journal of Applied Physics, 92 (10). pp. 6039-6042. ISSN 1089-7550
Etteh, N.E.I. and Harrison, P. (2002) Quantum mechanical scattering investigation of the thermionic and field induced emission components of the dark current in quantum well infrared photodetectors. Journal of Applied Physics, 92 (1). pp. 248-252. ISSN 1089-7550
Indjin, D., Harrison, P., Kelsall, R.W. et al. (1 more author) (2002) Self-consistent scattering theory of transport and output characteristics of quantum cascade lasers. Journal of Applied Physics, 91 (11). pp. 9019-9026. ISSN 1089-7550
Gadir, M.A., Harrison, P. and Soref, R.A. (2002) Responsivity of quantum well infrared photodetectors at terahertz detection wavelengths. Journal of Applied Physics, 91 (9). pp. 5820-5825. ISSN 1089-7550
Kinsler, P., Kelsall, R.W. and Harrison, P. (2002) Nonequilibrium electron heating in inter-subband terahertz lasers. Journal of Applied Physics, 91 (3). pp. 904-910. ISSN 1089-7550
Califano, M. and Harrison, P. (2002) Composition, volume, and aspect ratio dependence of the strain distribution, band lineups and electron effective masses in self-assembled pyramidal In1-xGaxAs/GaAs and SixGe1-x/Si quantum dots. Journal of Applied Physics, 91 (1). pp. 389-398. ISSN 1089-7550
Etteh, N.E.I. and Harrison, P. (2001) Carrier scattering approach to the origins of dark current in mid- and far-infrared (terahertz) quantum-well intersubband photodetectors (QWIPs). IEEE Journal of Quantum Electronics, 37 (5). pp. 672-675. ISSN 0018-9197
Donovan, K., Harrison, P. and Kelsall, R.W. (2001) Self-consistent solutions to the intersubband rate equations in quantum cascade lasers: Analysis of a GaAs/AlxGa1-xAs device. Journal of Applied Physics, 89 (6). pp. 3084-3090. ISSN 1089-7550
Harrison, P. and Soref, R.A. (2001) Population-inversion and gain estimates for a semiconductor TASER. IEEE Journal of Quantum Electronics, 37 (1). pp. 153-158. ISSN 0018-9197
Califano, M. and Harrison, P. (2000) Quantum box energies as a route to the ground state levels of self-assembled InAs pyramidal dots. Journal of Applied Physics, 88 (10). pp. 5870-5874. ISSN 1089-7550
Califano, M. and Harrison, P. (1999) Approximate methods for the solution of quantum wires and dots : Connection rules between pyramidal, cuboidal, and cubic dots. Journal of Applied Physics, 86 (9). pp. 5054-5059. ISSN 1089-7550
Kinsler, P., Harrison, P. and Kelsall, R.W. (1999) Intersubband terahertz lasers using four-level asymmetric quantum wells. Journal of Applied Physics, 85 (1). pp. 23-28. ISSN 1089-7550
Donovan, K., Harrison, P. and Kelsall, R.W. (1998) Stark ladders as tunable far-infrared emitters. Journal of Applied Physics, 84 (9). pp. 5175-5179. ISSN 1089-7550
Fatah, J.M., Harrison, P., Stirner, T. et al. (2 more authors) (1998) Double crystal x-ray diffraction simulations of diffusion in semiconductor microstructures. Journal of Applied Physics, 83 (8). pp. 4037-4041. ISSN 1089-7550
Long, F., Hagston, W.E., Harrison, P. et al. (1 more author) (1997) The structural dependence of the effective mass and Luttinger parameters in semiconductor quantum wells. Journal of Applied Physics, 82 (7). pp. 3414-3421. ISSN 1089-7550
Harrison, P. and Kelsall, R.W. (1997) Population inversion in optically pumped asymmetric quantum well terahertz lasers. Journal of Applied Physics, 81 (11). pp. 7135-7140. ISSN 1089-7550
Harrison, P. and Hagston, W.E. (1996) The effects of linear and non-linear diffusion on exciton energies in quantum wells. Journal of Applied Physics, 79 (11). pp. 8451-8455. ISSN 1089-7550
Long, F., Harrison, P. and Hagston, W.E. (1996) Empirical pseudopotential calculations of Cd1-xMnxTe. Journal of Applied Physics, 79 (9). pp. 6939-6942. ISSN 1089-7550
Proceedings Paper
Evans, C.A., Indjin, D., Ikonic, Z. et al. (1 more author) (2008) Thermal analysis of mid-infrared quantum-cascade lasers. In: Osinski, M., Henneberger, F. and Edamatsu, K., (eds.) Physics and Simulation of Optoelectronic Devices XVI. Physics and Simulation of Optoelectronic Devices XVI, 21 January 2008, San Jose, CA, USA. Proceedings of SPIE (6889). International Society for Optical Engineering , p. 688912.
Harrison, P., Indjin, D., Savic, I. et al. (7 more authors) (2008) On the coherence/incoherence of electron transport in semiconductor heterostructure optoelectronic devices. In: Belyanin, A.A. and Smowton, P.M., (eds.) Novel In-Plane Semiconductor Lasers VII. Novel In-Plane Semiconductor Lasers VII, 21 January 2008, San Jose, CA, USA. Proceedings of SPIE (6909). The International Society for Optical Engineering , p. 690912.