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Application method of laser, pulse-width-adjustable laser and application method of the pulse-width-adjustable laser

A laser and pulse width technology, applied in the field of lasers, can solve the problems of cumbersome operation and poor flexibility, and achieve the effects of convenient operation, simple operation and low cost

Active Publication Date: 2018-12-07
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] What the present invention aims to solve is the technical problem of poor flexibility and cumbersome operation in the prior art

Method used

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  • Application method of laser, pulse-width-adjustable laser and application method of the pulse-width-adjustable laser
  • Application method of laser, pulse-width-adjustable laser and application method of the pulse-width-adjustable laser
  • Application method of laser, pulse-width-adjustable laser and application method of the pulse-width-adjustable laser

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Experimental program
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Embodiment 2

[0082] Such as Figure 4 As shown, the embodiment of the present invention also provides a laser with adjustable pulse width, the laser includes a first reflective unit, a laser gain medium, a polarization splitting unit, a 1 / 4 wave plate, a Q switch, a second reflective unit, a second A drive unit, a second drive unit, and a pumping module for pumping the laser gain medium, the Q switch includes a first Q switch and a second Q switch, the first Q switch or the second Q switch is an electro-optic Q switch, and the first The reflection unit and the laser gain medium are sequentially arranged along the direction of the incident light path of the polarization beam splitting unit relative to the first reflection unit, and the 1 / 4 wave plate, the first Q switch, the second Q switch and the second reflection unit are arranged along the polarization beam splitting unit relative to the first The direction of the transmission light path or reflection light path of the reflection unit i...

Embodiment 3

[0091] The present invention also provides a method for using a laser with an adjustable pulse width in which both the first Q switch and the second Q switch are electro-optical Q switches in Embodiment 2, the method includes the following steps:

[0092] S1. The first driving unit applies a voltage U to the first Q switch 1 , where U 1 is 0 or λ / 4 voltage, the second driving unit applies a voltage U on the second Q switch 1 ’, where U 1 '=U 1 , after a specified time t 1 After that, step S2 is executed;

[0093] S2. The first drive unit applies a voltage U to the first Q switch 2 : If U in step S1 1 =0, U 2 is the λ / 4 voltage; if U in step S1 1 When the voltage is λ / 4, U 2 =0; the second driving unit applies a voltage U on the second Q switch 2 ’, where U 2 '=U 1 ’; After the specified time t 2 After that, step S3 is executed;

[0094] S3. The first driving unit applies a voltage U to the first Q switch 3 , where U 3 is 0 or λ / 4 voltage, the second driving uni...

Embodiment 4

[0112] The present invention also provides a method for using a laser with an adjustable pulse width in which the first Q switch is an acousto-optic Q switch and the second Q switch is an electro-optic Q switch in Embodiment 2. The method includes the following steps:

[0113] S1. The first drive unit applies a radio frequency signal to the first Q switch, and the second drive unit applies a voltage U to the second Q switch 1 ”, where U 1 "is the λ / 4 voltage, after the specified time t 1 After that, step S2 is executed;

[0114] S2. The first drive unit does not apply a radio frequency signal to the first Q switch, and the second drive unit applies a voltage U to the second Q switch 2 ”, where U 2 " = U 1 ”, after the specified time t 2 After that, step S3 is executed;

[0115] S3. The first drive unit does not apply a radio frequency signal to the first Q switch, and the second drive unit applies a voltage U to the second Q switch 3 ”, where U 3 ” Between 0 and λ / 4 vo...

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Abstract

The invention relates to the technical field of a laser, and provides an application method of a laser, a pulse-width-adjustable laser and an application method of the pulse-width-adjustable laser. The pulse-width-adjustable laser includes a first reflecting unit and a polarization beam-splitting unit, wherein the first reflecting unit and a laser gain medium are sequentially arranged in a direction, opposite to an incident optical path of the first reflecting unit, for the polarization beam-splitting unit; a 1 / 4 wave plate, a first Q switch, a second Q switch and a second reflecting unit aresequentially arranged in a direction, opposite to a transmission optical path or a reflecting optical path, for the polarization beam-splitting unit; the 1 / 4 wave plate is movable and can be removed from or inserted into the optical path; a first driving unit is electrically connected to the first Q switch; and a second driving unit is electrically connected to the second Q switch. Through mutualcoordination between the first Q switch and the second Q switch, the application method can realize quick and flexible adjusting of the laser pulse width.

Description

technical field [0001] The invention relates to the technical field of lasers, in particular to a method for using a laser, a laser with adjustable pulse width and a method for using the same. Background technique [0002] With the rapid development of laser technology, laser technology plays an increasingly important role in various fields, from military to civilian, from scientific research to teaching, from industry to agricultural and sideline industries and many other fields. At the same time, in engineering applications, the requirements for laser reliability, engineering, stability, assembleability, versatility, and easy operation are getting higher and higher. [0003] Most of the existing lasers are lasers with a single pulse width. At present, some schemes with adjustable pulse width mainly include the following three types: [0004] The first one is to adjust the pulse width through the chopping switch. This scheme can only chop to the short pulse width but not ...

Claims

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Application Information

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IPC IPC(8): H01S3/11H01S3/115H01S3/117H01S3/10H01S3/16
CPCH01S3/10061H01S3/11H01S3/115H01S3/117H01S3/1643H01S3/1671
Inventor 刘可彭钦军刘钊薄勇王小军宗楠许祖彦
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI