Molodtsov, I.S., Raspopov, N.A., Lobintsov, A.V. et al. (3 more authors) (2020) Quantum cascade laser with bound-to-quasi-continuum optical transitions at a temperature of up to 371 K. Quantum Electronics, 50 (8). pp. 710-713. ISSN 1063-7818
Abstract
Based on a matched Ga0.47In0.53As/Al0.48In0.52As heteropair, we have developed a quantum cascade laser emitting at a wavelength of 7.4 μm. The chosen heterostructure with a relatively large number of quantum wells and barriers represents two mini-bands separated by a mini-gap with a localised doublet level near the upper mini-band, which provides a wide emission band (~100 cm-1). In a pulse regime, the maximal laser operation temperature is 371 K. Such a high temperature is explained by two factors: a large energy of the transfer from the doublet to the upper mini-band and a large volt defect. The characteristic temperatures T0 are found, which are equal to 170 K for low (less than 300 K) temperatures and 270 K for the range of 300 – 370 K. In addition, optical cavity losses are determined to be 2.5 and 7.7 cm-1 at temperatures of 80 and 254 K, respectively. The pulse power is 0.3 W at 80 K and 0.05 W at 293 K.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 Kvantovaya Elektronika and IOP Publishing Limited. |
Keywords: | quantum cascade laser; quantum well; potential barrier; superlattice; mini-band; doublet; continuum; MOVPE technique |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 21 Oct 2020 08:09 |
Last Modified: | 21 Oct 2020 08:09 |
Status: | Published |
Publisher: | IOP Publishing |
Refereed: | Yes |
Identification Number: | 10.1070/qel17317 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:166998 |