NDLI: Pico-second passively mode locked surface-emitting laser with self-assembled semiconductor quantum dot absorber

Content Provider	IEEE Xplore Digital Library
Author	Garnache, A. Hoogland, S. Tropper, A.C. Gerard, J.M. Thierry-Mieg, V. Roberts, J.S.
Copyright Year	2002
Description	Author affiliation: Dept. of Phys. & Astron., Southampton Univ., UK (Garnache, A.; Hoogland, S.; Tropper, A.C.)
Abstract	Diode-pumped quantum-well vertical-external-cavity surface-emitting lasers (DP-VECSELs) have generated high average powers with circular diffraction-limited output beams, and short pulse operation. In this type of semiconductor laser, which is simple to manufacture, both the beam quality limitations of edge-emitting diode lasers and the power restrictions of electrically pumped surface-emitting lasers are overcome. It also does not require wavelength stabilization of the pump source, compared to solid-state laser systems. The laser mode area on the chip can be /spl sim/10/sup 4/ times larger than the one on the facet of an edge-emitting laser, offering scope for the generation of high average power and large pulse energy. The relatively small gain saturation fluence of quantum-well lasers implies that they can be passively mode-locked at repetition rates of several gigahertz with no tendency to Q-switching. Pulsed semiconductor lasers do not generally use the broad gain bandwidth to full advantage in the generation of picosecond pulses.
Sponsorship	IEEE Electron Devices Soc. IEEE Lasers & Electro-Opt. Soc
Starting Page	311
Ending Page	314
File Size	210183
Page Count	4
File Format	PDF
ISBN	0780373200
ISSN	10928669
DOI	10.1109/ICIPRM.2002.1014389
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-05-12
Publisher Place	Sweden
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Laser mode locking Surface emitting lasers Quantum dot lasers Semiconductor lasers Optical pulse generation Power lasers Pump lasers Laser excitation Quantum well lasers Power generation
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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