CUED Publications database

Bandwidth-Limited Picosecond Pulses from an Injection GaAlAs DH Laser with an External Dispersive Cavity

Vasil'ev, PP and Morozov, VN and Sergeev, AB (1985) Bandwidth-Limited Picosecond Pulses from an Injection GaAlAs DH Laser with an External Dispersive Cavity. IEEE Journal of Quantum Electronics, 21. pp. 576-581. ISSN 0018-9197

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Abstract

Mode locking of semiconductor lasers with external dispersive cavities is investigated both experimentally and theoretically. The external cavity consists of a microscope objective and a diffraction grating. Bandwidth-limited tunable picosecond pulses (FWHM about 3 ps and Δτ · Δυ= 0.30) are obtained with such a configuraton. The pulse duration is measured by a second-harmonic generation (SHG) correlation method and an ultrafast streak camera. Theoretical investigations of mode locking based on the time-domain approach and pulse propagation through the elements of the ring laser cavity are carried out. The laser medium is considered to be divided into two parts-the amplifying and absorbing regions. The steady state pulse parameters (duration, energy, and asymmetry) are derived from the computer simulation and are compared with the experiment. The effects of gain and absorber saturation are included in the treatment. Copyright © 1985 by The Institute of Electrical and Electronics Engineers, Inc.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Photonics
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:43
Last Modified: 18 Nov 2017 21:51
DOI: