Abstract
Since 1987, sub-Poissonian light with 4% squeezing was first observed by Tapster et al in a light emitting diode (LED), the generation of open- loop amplitude squeezed light in a semiconductor emitter (LED/LD) has been the subject of a great deal of interest both experimentally and theoretically in recent years. Some of these investigations were concerned with pure both electron-negative- feedback effects (ie, the scheme of high impedance pump noise compression) and optical-negative- feedback effects. Others were concerned with the photoelectronic-negative-feedback effects. In this letter, we first report a very interesting experimental phenomenon - dc bias effect of a photodiode in a closed-feedback-loop.
© 1996 Optical Society of America
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