NDLI: Design Optimization of Passively Mode-Locked Semiconductor Lasers With Intracavity Grating Spectral Filters

Content Provider	IEEE Xplore Digital Library
Author	O'Callaghan, F. Bitauld, D. O'Brien, S.
Copyright Year	1965
Abstract	We consider design optimization of passively mode-locked two-section semiconductor lasers that incorporate intracavity grating spectral filters. Our goal is to develop a method for finding the optimal wavelength location for the filter in order to maximize the region of stable mode-locking as a function of drive current and reverse bias in the absorber section. In order to account for material dispersion in the two sections of the laser, we use analytic approximations for the gain and absorption as a function of carrier density and frequency. Fits to measured gain and absorption curves then provide inputs for numerical simulations based on a large signal accurate delay-differential model of the mode-locked laser. We show how a unique set of model parameters for each value of the drive current and reverse bias voltage can be selected based on the variation of the net gain along branches of steady-state solutions of the model. We demonstrate the validity of this approach by demonstrating qualitative agreement between the numerical simulations and measured current-voltage phase space of a two-section Fabry-Perot laser. We then show how to adapt this method to determine an optimum location for the spectral filter in a notional device with the same material composition, based on the targeted locking range, and accounting for the modal selectivity of the filter.
Sponsorship	IEEE Lasers and Electro-Optics Society
Starting Page	1
Ending Page	11
Page Count	11
File Size	3326755
File Format	PDF
ISSN	00189197
Volume Number	50
Issue Number	11
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Laser mode locking Absorption Charge carrier density Mathematical model Current measurement Semiconductor lasers Measurement by laser beam mode-locked laser Semiconductor laser
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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