Tunable laser pumping system and method for obtaining tunable laser by using same

A laser and pumping technology, applied in the optical field, can solve the problem that the high-energy tunable laser pumping optical path is difficult to take into account the needs of optimal pumping conditions for various tunable laser working substances, and achieves the effect of simple structure and low cost.

Active Publication Date: 2016-04-20
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing large-energy tunable laser pumping optical path based on the optical beam splitter with fixed splitting ratio is difficult to ta

Method used

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  • Tunable laser pumping system and method for obtaining tunable laser by using same
  • Tunable laser pumping system and method for obtaining tunable laser by using same

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specific Embodiment approach 1

[0023] Specific implementation mode one: see figure 1 with figure 2 Describe this embodiment, a tunable laser pumping system described in this embodiment, which includes a servo motor 1, a gradient reflectivity beam splitter 2, an oscillator 3, an amplifier 4, an aperture 5, and an optical attenuation sheet 6 , photodetector 7, computer 8 and total mirror 9;

[0024] The servo motor 1 is used to control the movement of the gradient reflectivity beam splitter 2, so that the laser spot incident on the gradient reflectivity beam splitter 2 moves laterally on its surface,

[0025] The laser light is incident on the gradient reflectivity beam splitter 2, and the light reflected by the gradient reflectivity beam splitter 2 is used as the pumping source of the oscillator 3, and the oscillator 3 outputs a tunable seed laser under the action of the pump source, and is incident on the amplifier 4,

[0026] The light transmitted by the gradient reflectivity beam splitter 2 is inciden...

specific Embodiment approach 2

[0031] Embodiment 2: A method for obtaining a tunable laser by using a tunable laser pump system described in Embodiment 1, the method includes the following steps:

[0032] Step 1: The servo motor 1 remains stationary, so that the laser light is incident on the gradient reflectivity beam splitter 2, and the average value I of the laser light intensity signal output by the photodetector 7 is collected by the computer 8 with the sampling frequency f 0 ,

[0033] Step 2: Control the servo motor 1 through the computer 8, so that the servo motor 1 drives the gradient reflectivity beam splitter 2 to move in a certain direction, and the computer 8 collects the average value I of the laser light intensity signal output by the photodetector 7 in real time with a frequency f 1 , and compare the I in real time 0 with I 1 the value of

[0034] If I 1 ≥I 0 , so that the servo motor 1 drives the gradient reflectivity beam splitter 2 to continue to move in the current direction of moti...

specific Embodiment approach 3

[0038] Embodiment 3: The difference between this embodiment and the method of obtaining a tunable laser by using a tunable laser pump system described in Embodiment 2 is that the frequency f ranges from 1 Hz to 1 KHz.

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Abstract

The invention discloses a tunable laser pumping system and a method for obtaining a tunable laser by using the same and belongs to the optical field. The tunable laser pumping system solves a problem that it is difficult for a conventional high-energy tunable laser pumping optical path implemented by an optical beam splitter with a fixed splitting ratio to cater to the optimum pumping conditions of various tunable laser materials. A servo motor is used for driving a beam splitter with gradually-changed reflectivity to move in order that the laser spots emitted to the beam splitter with gradually-changed reflectivity laterally moves on the surface of the beam splitter with gradually-changed reflectivity. Laser reflected by the beam splitter with gradually-changed reflectivity is used as a pumping source of an oscillator. The oscillator outputs a tunable seed laser under the effect of the pumping source and the tunable seed laser is emitted to an amplifier. The laser transmitting the beam splitter with gradually-changed reflectivity is emitted to a total reflector. The laser reflected by the total reflector is emitted to the amplifier used as pumping light. The amplifier outputs the tunable laser after amplifying the tunable seed laser with the pumping of the pumping light. The tunable laser pumping system is used for outputting high-energy tunable laser.

Description

technical field [0001] The present invention belongs to the field of optics. Background technique [0002] Since the invention of the laser light source, its good monochromaticity and high brightness have brought great convenience to people's production and life. With the increasing application of laser light sources, in order to expand its application range, tunable lasers with continuously tunable output wavelengths within a certain range of wavelengths have become a research hotspot in laser technology. Especially in some special applications, such as long-distance spectral diagnosis, isotope separation, etc., higher requirements are put forward for high-energy tunable laser sources. At present, the overall structure of the mature high-energy tunable laser system is "Hans oscillation amplification system". [0003] The role of the oscillator stage is to generate a narrow linewidth, tunable seed laser output. The role of the amplification stage is to amplify the energy ...

Claims

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Application Information

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IPC IPC(8): H01S3/091H01S3/08
CPCH01S3/08H01S3/091
Inventor 董志伟陈默然唐佳禄李旭东樊荣伟陈德应于欣马欲飞闫仁鹏周志刚
Owner HARBIN INST OF TECH
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