The onset of coherence collapse in DBR lasers

Journal Article · Fri Jun 01 00:00:00 EDT 1990 · IEEE Photonics Technology Letters (Institute of Electrical and Electronics Engineers); (USA)

DOI:https://doi.org/10.1109/68.56596· OSTI ID:6589756

Woodward, S L; Koch, T L; Koren, U ^[1]

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1. AT and T Bell Labs., Holmdel, NJ (USA)

The authors investigate how the onset of coherence collapse depends on laser output power. The lasers were three-section multiquantum-well distributed-Bragg-reflector (MQW-DBR) lasers. The fraction of light reflected back into the lasing mode was varied, and the point at which the transition to coherence collapse occurred was measured. This feedback level varies approximately linearly with laser output power. For these lasers, when the output power is 1 mW, the transition to coherence collapse beings when the optical feedback into the lasing mode is below {minus} 40 dBm; when the feedback power is {minus} 35 dBm the laser line is completely collapsed.

• OSTI ID: 6589756
• Journal Information: IEEE Photonics Technology Letters (Institute of Electrical and Electronics Engineers); (USA), Journal Name: IEEE Photonics Technology Letters (Institute of Electrical and Electronics Engineers); (USA) Vol. 2:6; ISSN IPTLE; ISSN 1041-1135
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
657002 -- Theoretical & Mathematical Physics-- Classical & Quantum Mechanics
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLIFICATION
BACKSCATTERING
BRAGG REFLECTION
EFFICIENCY
EMISSION
ENERGY-LEVEL TRANSITIONS
GAIN
LASERS
MODE SELECTION
OPTICAL PUMPING
PUMPING
QUANTUM EFFICIENCY
REFLECTION
SCATTERING
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS
SOLID STATE LASERS
STIMULATED EMISSION