A Single-ended Output Intracavity Pumped Optical Parametric Oscillator

Abstract

The invention discloses a cavity pump light parameter oscillator of single-ended output. The oscillator comprises a laser pump source, a focusing lens, an input coupling mirror, a laser gain crystal, a diachronic mirror, a non-linear crystal, a first curved surface mirror, piezoelectric ceramic arranged on the non-linear crystal and a second curved surface mirror arranged on a reflected light path of the diachronic mirror. The input coupling mirror, the laser gain crystal, the diachronic mirror, the non-linear crystal and the first curved surface mirror form a laser resonant cavity. The first curved surface mirror, the non-linear crystal, the diachronic mirror and the second curved surface mirror form a signal light resonant cavity. The pump source carries out pumping via the focusing lens, population inversion is formed in a gain medium, laser oscillation is formed in the laser resonant cavity, and an oscillated laser generates signal light and forward and backward idle light via the non-linear crystal. Backward idle light is reflected by the second curved surface mirror and then is coupled and output with forward idle light generated by the non-linear crystal via the first curved surface mirror so as to realize single-ended output of intermediate infrared idle light.

Description

technical field [0001] The invention belongs to the technical field of optical parametric oscillators, and more specifically relates to an intracavity pumped optical parametric oscillator with single-end output. Background technique [0002] The Optical Parametric Oscillator (OPO) uses the second-order nonlinear effect to convert the incident laser light (called pump light) into two outgoing laser light with different frequencies, one of which has a higher frequency is called signal light, and the other is called signal light. The one with a lower frequency is called the idler light, and the frequency of the pump light is equal to the sum of the frequencies of the signal light and the idler light; OPO is used to expand the output band of laser radiation and realize broadband tunable laser radiation. [0003] In the optical parametric oscillator pumped in the cavity, the nonlinear crystal is placed in the resonant cavity of the pump laser; the high power density in the resona...

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Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a single-ended output intracavity pumped optical parametric oscillator, the purpose of which is to solve the mid-infrared idleness of the intracavity pumped optical parametric oscillator in the prior art. The problem of low frequency optical dual-terminal output utilization and low output power

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