Patent ID: 9130346
Filing Date: 2015-09-08
Classification: G01B,G01N,H01S

Abstract:
1. A device comprising: an optical resonator including an optical gain medium and an optical member which allows light to pass therethrough: a first Fabry-Pérot resonator constructed by an end and another end of the optical gain medium; and a second Fabry-Pérot resonator constructed by the another end of the optical gain medium and an end of the optical member facing the another end of the optical gain medium, wherein the first Fabry-Pérot resonator provides a first ripple to an oscillation spectrum of the optical resonator, wherein the second Fabry-Pérot resonator provides a second ripple to the oscillation spectrum of the optical resonator, wherein a resonator length of the second Fabry-Pérot resonator is set such that an amplitude of a sum of the first ripple and the second ripple is smaller than an amplitude of the first ripple at least at one of wavelengths in an amplification frequency band of the optical gain medium, and wherein another end of the optical member has an anti reflection coating.