Film polaroid sheet assembling and calibrating device and assembling and calibrating method
A thin film polarizer and polarizer technology, applied in the field of lasers, can solve the problems of reducing the laser stability of the energy utilization rate in the cavity, and achieve the effects of easy operation, high precision and good stability
Inactive Publication Date: 2012-09-19
BEIJING GK LASER TECH
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Problems solved by technology
The inventors of this case found that when the thin-film polarizer is used in cavity-empty lasers or regenerative cavity amplifiers, this wide tuning range will seriously reduce the utilization rate of energy in the cavity and the stability of the laser
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[0027] According to one embodiment of the present invention, a kind of thin-film polarizer alignment device is provided, comprising a turntable structure for arranging the polarizer, figure 1 A schematic perspective view of the turntable structure is shown, figure 2 An assembly drawing of the turntable structure is shown. Such as figure 1 , 2 As shown, the turntable structure of the thin-film polarizer alignment device includes an upper chassis 1 and a lower chassis 2 installed coaxially, and the upper chassis 1 can rotate relative to the lower chassis 2 . The turntable structure is used to precisely adjust the angle of the polarizer, so that the film polarizer can be adjusted conveniently, quickly and accurately, thereby obtaining a high extinction ratio.
[0028] further reference figure 1 , 2 , in one embodiment, the lower chassis 1 includes a base portion 1a and a boss portion 1b, the base portion 1a has an arc-shaped elongated hole 1c for accommodating a lock nut 4,...
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Abstract
The invention provides a film polaroid sheet assembling and calibrating device, which comprises an upper chassis (1) and a lower chassis (2) arranged coaxially, wherein the upper chassis (1) is connected with the lower chassis (2) through a rotary pin (2f); a groove structure (2d) for accommodating and fixing the polaroid sheet is arranged on the upper chassis (2); one of the upper chassis (1) and the lower chassis (2) is provided with an angle index (1d); the angle index (1d) ranges from 0 degree to 360 degrees; and the other of the upper chassis (1) and the lower chassis (2) is provided with indicating needles (2e) which correspond to the angle index (1d). Compared with the prior art, the device and the method have the technical effects that: 1, the stability is high, convenience is brought to operation, and the device and the method are suitable for assembling and calibrating polaroid sheets on a large scale; and 2, the accuracy is high, and the requirements of high-energy lasers such as cavity-dumping lasers, regenerating cavity amplifiers and the like are met.
Description
technical field [0001] The invention belongs to the field of laser technology, in particular, the invention relates to a device and method for installing and aligning thin-film polarizers. Background technique [0002] In the field of laser technology, in order to obtain a laser beam with a certain polarization state, thin-film polarizers are often used as polarizing components. And each polarizer has individual differences, so it is generally necessary to calibrate the polarizer before use. In the process of assembling and calibrating the polarizer, the commonly used method is to use a helium-neon laser or other continuous lasers to output vertically polarized light (s light), make it incident on the film polarizer, and adjust the angle of the film polarizer to reflect it. When the light is the strongest, it is considered that the polarizer has been adjusted to the best state of extinction ratio (that is, adjusted to the required degree of polarization). [0003] At prese...
Claims
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Inventor 王小发樊仲维黄玉涛连富强黄科石朝辉王培峰
Owner BEIJING GK LASER TECH