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Laser output power optimization method based on variable-transmittance endoscope

A technology of output power and optimization method, applied in lasers, laser parts, phonon exciters, etc., can solve the problem that the laser cannot be optimized on-line output power, and achieve the effect of avoiding the increase of development cost, convenient operation and wide adaptability

Inactive Publication Date: 2016-03-02
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that ordinary lasers cannot realize online output power optimization for different working powers, and provide a laser output power optimization method based on a variable transmittance cavity mirror

Method used

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  • Laser output power optimization method based on variable-transmittance endoscope
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  • Laser output power optimization method based on variable-transmittance endoscope

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Embodiment Construction

[0046] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0047] In this embodiment, the above optimization method is applied to a mid-infrared continuous operation optical parametric oscillator (OPO) with single resonance of signal light. The mid-infrared optical parametric oscillator involved in the embodiment is based on a quasi-phase-matched MgO:PPLN crystal. This type of optical parametric oscillator has wide spectral matching linewidth and good temperature and wavelength tuning characteristics, so it is very suitable for the optimization method involved in the present invention. The specific optimization steps are as follows:

[0048] Step 1: The design goal is to produce a 3.0μm band mid-infrared laser output with an output power of not less than 2W. According to the energy conservation of the three-wave interaction under the quasi-phase matching condition and the momentum conservation relationship un...

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Abstract

The invention relates to a laser output power optimization method based on a variable-transmittance endoscope, and belongs to the technical field of laser. The method comprises the following specific steps: (1) calculating the output power of a needed pump source according to the requirement of the design index on the laser output characteristic; (2) calculating the optimal transmittance values under different pump power according to the range of pump power and the optimal transmittance formula; (3) determining the coating requirement of the variable-transmittance endoscope according to the tuning characteristics of the oscillation wavelength of a laser; (4) making the variable-transmittance endoscope according to the coating requirement; (5) adopting the selected pump source and the variable-transmittance endoscope to build a laser system; (6) setting the pump power, and adjusting a laser resonator to obtain laser output; (7) tuning the laser wavelength; and (8) making the laser work stably at the optimal transmittance to obtain the maximum output power, thus completing online optimization of the output power of the laser. According to the invention, there is no need to insert elements into the cavity, and the loss is low. The optimization method is simple, reliable in work, convenient in operation, and wide in adaptability.

Description

technical field [0001] The invention relates to a method for optimizing the output power of a laser, in particular to a method for optimizing the output power of a laser based on a cavity mirror with variable transmittance, and belongs to the field of laser technology. Background technique [0002] Laser has the characteristics of good directionality, high coherence, and high power density. It has a wide range of applications in civil and military fields, and can be used in spectral analysis, remote sensing detection, laser radar, and infrared guidance. In order to obtain low-threshold and high-efficiency laser output, the optimal design of the laser resonator is very important. According to the output principle of the laser, it can be known that for a certain pump power and oscillation wavelength, there is an optimal coupling output rate (that is, the transmittance of the cavity mirror to the oscillation light), so that the output power reaches the maximum value. [0003] ...

Claims

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Application Information

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IPC IPC(8): H01S3/102
Inventor 王欣李卓李倩文王骞
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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