NDLI: Semiconductor Laser Dynamics With Two Filtered Optical Feedbacks

Content Provider	IEEE Xplore Digital Library
Author	Pal, V. Suelzer, J.S. Prasad, A. Vemuri, G. Ghosh, R.
Copyright Year	1965
Abstract	We present an experimental and numerical study of the dynamics of a semiconductor laser subject to filtered optical feedbacks (FOFs) from two separate external cavities. Our results show that the inclusion of a second FOF introduces a rich control over the frequency of the dynamics. The period of frequency oscillations of the laser light is determined by the two time scales related to the feedback loops, and the frequency corresponding to this period is given by the average of the fundamental frequencies of the two cavities. The average frequency is dependent on the relative feedback from the cavities. Proper adjustment of the cavity lengths leads to the oscillations at a frequency which represents the average of the higher harmonics of one cavity and the fundamental frequency of the other cavity. The amplitudes of the frequency components in the single-FOF can be controlled by adding a second FOF, and in particular, the amplitude of the fundamental frequency is suppressed while the amplitude of the second harmonic becomes larger than that of the fundamental frequency. A cascade of period doubling bifurcations leads the dynamics to a chaotic state.
Sponsorship	IEEE Lasers and Electro-Optics Society
Starting Page	340
Ending Page	349
Page Count	10
File Size	2186226
File Format	PDF
ISSN	00189197
Volume Number	49
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cavity resonators Laser feedback Oscillators Semiconductor lasers Laser theory Laser modes Optical feedback time delay Chaos filtered feedback frequency dynamics optical feedback semiconductor lasers
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
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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