Solution structure and dynamics of a semiconductor laser subject to feedback from two external filters

P. Slowinski, B Krauskopf, S. Wieczorek

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

2 Citations (Scopus)

Abstract

We present an analysis of a semiconductor laser subject to filtered optical feedback from two filtering elements (2FOF). The motivation for this study comes from applications where two filters are used to control and stabilise the laser output. Compared to a laser with a single filtered optical feedback loop, the introduction of the second filter significantly influences the structure of the basic continuous-wave solutions, which are also known as external filtered modes (EFMs). We compute and represent the EFMs of the underlying delay differential equation model as surfaces in the space of frequency and inversion level of the laser, and feedback phase difference. The latter quantity is a key parameter since it is associated with interference between the two filter fields and, hence, controls the effective feedback strength. We further show how the EFM surface changes upon variation of other filter parameters, in particular, the two delay times. Overall, the investigation of the EFM-surface provides a geometric approach to the multi-parameter analysis of the 2FOF laser, which allows for comprehensive insight into the solution structure and dynamics of the system
Translated title of the contributionSolution structure and dynamics of a semiconductor laser subject to feedback from two external filters
Original languageEnglish
Title of host publicationSPIE Europe
Publication statusPublished - Feb 2010

Bibliographical note

Conference Organiser: SPIE
Other: http://hdl.handle.net/1983/1583

Fingerprint

Dive into the research topics of 'Solution structure and dynamics of a semiconductor laser subject to feedback from two external filters'. Together they form a unique fingerprint.

Cite this