Internal cavity multiple frequency laser of laser diode pump

A technology of frequency-doubling lasers and laser diodes, applied in the laser field, can solve problems such as mode mismatch, affecting laser output power and stability, etc., and achieve the effects of increasing output power, overcoming changes in oscillating light modes, and simple structure

CN100337373CInactive Publication Date: 2007-09-12ZHENGZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2007-09-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

An inner cavity frequency-doubled laser includes a pump source, an optical coupling system, a heat stable resonator composed of a total reflection mirror, an output mirror and a lens plugging in between, a laser medium and a multiple frequency crystal characterizing that the total reflection mirror and the output mirror are plane-plane mirrors, the lens is a convex lens, the medium is set between the total reflection mirror and the convex lens and at the corset of an oscillation light, the crystal is set between the convex lens and the output mirror at another corset of the light. This invented heat stable resonator composed of two plane-plane mirrors and one convex lens overcomes the heat lens effect of different focuses generated by different pump powers, the green light of the frequency-doubled laser and the mismatch of the mode between the pump light and the oscillation light in a large variance sphere.
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Description

(1) Technical field

[0001] The invention belongs to the field of laser technology, in particular to a laser diode-pumped intracavity frequency-doubled laser, which is suitable for laser full-color display, pumping source of other lasers, optical storage, laser marking, laser scribing, printing plate Applications in the fields of thermal imaging, laser medical treatment, scientific research and entertainment. (2) Background technology

[0002] Watt-level continuous red, green, and blue lasers are widely used in the fields of laser full-color display, pump source of other lasers, optical storage, laser marking, laser scribing, thermal imaging of printing plates, laser medical treatment, scientific research and entertainment, etc. important application. CW intracavity frequency-doubled lasers pumped by laser diodes have become the most suitable for realizing the above-mentioned red, green and blue lasers due to their advantages of high power, high efficiency, high beam quality...

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings (embodiments), but it does not limit the present invention.

[0034] As shown in Figure 1: the intracavity frequency-multiplied laser pumped by the laser diode includes a pump source (7), an optical coupling system (6), and is composed of a flat mirror (1), a flat output mirror (2) and two inserts. A thermally stable resonant cavity composed of a convex lens (3) between the mirrors, and a laser medium (4) and a frequency doubling crystal (5) placed in the resonant cavity, the laser medium (4) is located between the flat mirror (1) and the convex lens (3), and close to the total reflection mirror (1), that is, placed at a beam waist of the oscillating light; the frequency doubling crystal (5) is located between the convex lens (3) and the flat output mirror (2), and close to Rely on the flat output mirror (2), that is, place it at the other beam waist of the oscillating li...