Ryvkin, B. S., Avrutin, E. A. orcid.org/0000-0001-5488-3222, Kostamovaara, J. E K et al. (1 more author) (2017) Laser diode structures with a saturable absorber for high-energy picosecond optical pulse generation by combined gain-and Q-switching. Semiconductor science and technology. 025015. ISSN 0268-1242
Abstract
The performance of gain-switched Fabry-Perot asymmetric-waveguide semiconductor lasers with a large equivalent spot size and an intracavity saturable absorber was investigated experimentally and theoretically. The laser with a short (∼20 μm) absorber emitted high-energy afterpulse-free optical pulses in a broad range of injection current pulse amplitudes; optical pulses with a peak power of about 35 W and a duration of about 80 ps at half maximum were achieved with a current pulse with an amplitude of just 8 A and a duration of 1.5 ns. Good quality pulsations were observed in a broad range of elevated temperatures. The introduction of a substantially longer absorber section leads to strong spectral broadening of the output without a significant improvement to pulse energy and peak power.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2017 IOP Publishing Ltd . This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details |
Keywords: | gain switching,optical radars,semiconductor lasers |
Dates: |
|
Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Electronic Engineering (York) |
Depositing User: | Pure (York) |
Date Deposited: | 24 Mar 2017 09:20 |
Last Modified: | 16 Oct 2024 13:39 |
Published Version: | https://doi.org/10.1088/1361-6641/32/2/025015 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1088/1361-6641/32/2/025015 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:114065 |
Download
Filename: Ryvkin_et_al_gain_switched_with_absorber_as_accepted.pdf
Description: Ryvkin et al gain switched with absorber as accepted