Mode structure of a semiconductor laser with feedback from two external filters

P. Slowiński; B. Krauskopf; S. Wieczorek

doi:10.1117/12.780576

8 May 2008 Mode structure of a semiconductor laser with feedback from two external filters

P. Slowiński, B. Krauskopf, S. Wieczorek

Proceedings Volume 6997, Semiconductor Lasers and Laser Dynamics III; 69971K (2008) https://doi.org/10.1117/12.780576
Event: SPIE Photonics Europe, 2008, Strasbourg, France

Abstract

We study a semiconductor laser subject to filtered optical feedback from two separate filters. This work is motivated by an application where two fiber gratings are used to stabilize the output of a laser source. Specifically, we consider the structure of the external filtered modes (EFMs), which are the basic cw-states of the system. The system is modelled by a set of four delay differential equations with two delays that are due to the travel times of the light in each of the external cavities. Here, each filter is approximated by a Lorentzian and we assume that there is no interaction between the two filters. We derive a transcendental equation for the EFMs as a function of the widths, detunings and the feedback strengths of the two filters. With continuation techniques we investigate how the number of EFMs changes with parameters. In particular, we consider the equation for its envelope. This allows us to determine regions in the plane of the two detunings that correspond to one, two or three EFM components - disjoint closed curves that are traced out by the EFMs as a function of the feedback phase.

Citation Download Citation

P. Slowiński, B. Krauskopf, and S. Wieczorek "Mode structure of a semiconductor laser with feedback from two external filters", Proc. SPIE 6997, Semiconductor Lasers and Laser Dynamics III, 69971K (8 May 2008); https://doi.org/10.1117/12.780576

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available