Single-longitudinal-mode optical parametric oscillation amplifier and automatic locking method thereof

A technology of optical parametric oscillation and single longitudinal mode, which is applied to lasers, laser components, excitation methods/devices, etc., can solve the problems of high toxicity, large radiation that cannot be completely eliminated, and short service life of dye molecules. High overall efficiency, stable output, and high efficiency

CN103513490AInactive Publication Date: 2014-01-15DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2014-01-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a single-longitudinal-mode optical parametric oscillation amplifier which is extra narrow in bandwidth, ultra in frequency stabilization, tunable and efficient. An optical parameter laser is a solid laser pump injected with seed light, the oscillator stage is of an annular cavity structure design, continuous stable single-longitudinal-mode seed light is injected, and cavity length mode locking is automatically controlled through programs. The optical parameter laser can output single longitudinal mode lasers with the bandwidth smaller than 200MHz, the energy conversion efficiency is close to 40% to the maximum extent, and the output wave length can cover 430-3500nm (limited by the range of seed light wave length). Stabilization of the wave length of the laser and continuous scanning of wave lengths of the seed light within a limitation of non-mode-jump by controlling a self-feedback system through programs can be achieved.
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Description

technical field

[0001] The invention relates to an optical parametric laser, which belongs to the field of optoelectronic technology, in particular to an ultra-stable frequency tunable high-efficiency optical parametric oscillation amplifier with a single longitudinal mode and extremely narrow bandwidth. Background technique

[0002] Since the world's first ruby ​​laser came out in 1960, laser technology has developed rapidly over the past 50 years, and has been combined with multiple disciplines to form multiple application technology fields, such as laser processing technology, laser detection and measurement technology, and laser spectrum analysis technology. , nonlinear optics, ultrafast lasers, laser chemistry, lidar, etc. In order to meet different needs, lasers are also developing in the direction of higher energy, wider coverage wavelength, narrower line width, and shorter pulse width.

[0003] The design of lasers with different characteristics depends on the needs...

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Embodiment Construction

[0051] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0052] Such as figure 1 As shown, the optical parametric oscillator amplifier of the present invention is divided into two modules: an optical parametric oscillator (OPO) and an optical parametric amplifier (OPA), and has two major parts: an optical path system and a control system.

[0053]The first is the optical system. Here we use the output of the solid-state laser with seed injection as the pump light of OPO / OPA. After the pump light enters the OPO / OPA, it first passes through a half-wave plate corresponding to the wavelength of the pump light (consistent with the wavelength of the pump light) to adjust to a suitable polarization, and then passes through a beam reducer pair composed of a convex lens and a concave lens. To adjust the beam size to the size of nonlinear crystals suitable for OPO and OPA. Then a beam splitter divides the p...