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High-impedance suppression of pump fluctuation and amplitude squeezing in semiconductor lasers

Journal Article · · Phys. Rev. A; (United States)
The pump amplitude fluctuation of a current-driven semiconductor laser can be suppressed to below the ordinary shot-noise level by ''high-impedance suppression.'' As a result of this pump-fluctuation suppression, the output of a current-driven semiconductor laser exhibits amplitude squeezing in the frequency region below the cavity bandwidth. The noise equivalent circuits and the quantum-mechanical Langevin equations are derived and discussed for clarifying the difference between an ordinary laser oscillator with shot-noise-limited pump fluctuation and a constant-current-driven semiconductor laser.
Research Organization:
Nippon Telegraph and Telephone Corporation, Musashino Electrical Communication Laboratories, Musashinoshi, Tokyo 180, Japan
OSTI ID:
6088425
Journal Information:
Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 35:12; ISSN PLRAA
Country of Publication:
United States
Language:
English

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