Abstract
The narrow linewidth laser which can operate reliably in space environment has important application value. This paper introduces the prototype of a miniaturized narrow linewidth laser for space application based on a self-developed high finesse optical reference cavity. The prototype performs beat frequency comparison measurement with another narrow linewidth laser system in the laboratory. The fractional frequency instability of a single system is 1.6×10- 15@1s achieved preliminarily, and the linewidth is 0.86 Hz.
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