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Optica Publishing Group
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1994),
  • paper CPD3

Amplitude Squeezing of a Multiple Quantum-Well Distributed Feedback Semiconductor Laser Operating at Room Temperature

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Abstract

The control of the quantum state of light has recently been studied extensively, aiming at the achievement of ultra-low noise below the shot-noise limit. Yamamoto and Machida showed that the amplitude squeezing, that is, the intensity noise reduction below the shot-noise limit, could be achieved in constant-current-driven semiconductor lasers [1]. The semiconductor- laser noise consists of the three kinds of noise: the intrinsic noise due to the output coupling, the excess noise due to the internal loss, and the spontaneous emission noise. The first and second noises are below the shot-noise level, whereas the spontaneous emission noise is usually comparable with or even larger than the shot noise, making it difficult to achieve efficient amplitude squeezing.

© 1994 Optical Society of America

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