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Thermal depolarization compensation resonant cavity of high power E-O Q-switch solid laser

A technology of solid-state lasers and laser resonators, applied in the field of laser resonators, can solve problems such as inapplicability

Inactive Publication Date: 2006-09-06
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

According to the experimental results of reference 1, this structure has a significant compensation effect on thermally induced birefringence, but it outputs nonlinearly polarized light, and this structure will not be applicable in laser applications that require linearly polarized light such as frequency conversion

Method used

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  • Thermal depolarization compensation resonant cavity of high power E-O Q-switch solid laser
  • Thermal depolarization compensation resonant cavity of high power E-O Q-switch solid laser
  • Thermal depolarization compensation resonant cavity of high power E-O Q-switch solid laser

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Embodiment Construction

[0016] see image 3 , image 3 It is a structural schematic diagram of the thermal depolarization compensation resonator of the high-power electro-optic Q-switched solid-state laser of the present invention, as can be seen from the figure, the thermal depolarization compensation resonator of the high-power electro-optic Q-switched solid-state laser of the present invention includes an output mirror 1, a laser medium 5 and the laser resonator that total reflection mirror 6 forms, on the optical axis of described laser resonator, from described laser medium 5 to output mirror 1, be provided with a λ / 4 wave plate 3, a polarizer 4 and A first electro-optic Q switch composed of two Pockels boxes 2 clamping a 90-degree quartz polarization rotator 8, the polarizer 4 forms a Brewster angle with the optical axis, the first electro-optic Q switch and The output mirror 1 forms the first polarization branch, and in the other direction of the Brewster angle with the polarizer 4, there is ...

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Abstract

The present invention refers to a thermo-depolarization compensation resonant cavity for electric light Q adjusting solid laser. It contains laser resonator constructed from outgoing mirror, laser medium and holophote, featuring on said laser resonator optical axis from self-excitation optically thinner medium to outgoing mirror in turn set one wave plate, one polaroid and first electric light q-switch composed of two pockels boxes held a piece of 90 degree quartz polarization rotation piece, said polaroid with said optical axis to form Brewster angle, said first electric light q-switch and outgoing mirror constituting first polarization shunt, on another direction with said polaroid to form Brewster angle, also set second electric light q-switch, said second electric light q-switch and another holophote constituting second polarization shunt, said wave plate speed axle with photo - horizontal polarization direction or vertical polarization all being 45 degree. Said invented resonant cavity compensates thermo-depolarization loss and ensures laser outputting linearly polarized light.

Description

technical field [0001] The invention belongs to a laser resonant cavity, and is a thermal depolarization compensation resonant cavity of a high-power electro-optical Q-switched solid-state laser. Background technique [0002] A general high-power electro-optic Q-switched solid-state laser resonator structure such as figure 1 As shown in the figure: 1 is the output mirror, 2 is the Pockels box, 3 is the λ / 4 wave plate, 4 is the polarizer, 5 is the laser medium, 6 is the total reflection mirror, 7 is the thermal depolarization loss, due to the crystal The thermally induced birefringence effect of the rod and the Pockels cell will cause the linearly polarized light produced by the polarizer to pass through the crystal rod, the polarization state will change, and it will no longer be linearly polarized light, so that when it passes through the polarizer again, the vertical polarization The component will be reflected out of the cavity, resulting in energy loss, ie thermally ind...

Claims

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Application Information

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IPC IPC(8): H01S3/08
Inventor 纪江华朱小磊戴殊韬冯永伟
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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