Squeezing in an injection-locked semiconductor laser
- 1 September 1993
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 48 (3) , 2230-2234
- https://doi.org/10.1103/physreva.48.2230
Abstract
The intensity-noise properties of an injection-locked semiconductor laser were studied experimentally. The constant-current-driven semiconductor laser producing the amplitude-squeezed state whose intensity noise was reduced below the standard quantum limit (SQL) by 0.72 dB was injection-locked by an external master laser. The measured intensity-noise level of the injection-locked semiconductor laser was 0.91 dB below the SQL. This experimental result indicates that a phase-coherent amplitude-squeezed state or squeezed vacuum state together with a reference local oscillator wave can be generated directly by semiconductor laser systems.Keywords
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