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DPAL laser with local bidirectional alternative flowing gain medium

A gain medium and laser technology, applied in the field of lasers, can solve the problems of increased technical realization difficulty, high technical requirements of fans, and unfavorable engineering realization, and achieves the effect of avoiding pollution and damage, reducing pollution and increasing working time.

Active Publication Date: 2016-05-04
INST OF ELECTRONICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] like figure 2 The prior art scheme shown requires the entire system to maintain a relatively high temperature, which puts forward high requirements on the overall heat resistance and air tightness of the system, which greatly increases the difficulty of technical realization of the entire scheme; and the high temperature alkali metal in the system The steam flows in a closed loop, but because the high-temperature alkali metal vapor has extremely active chemical properties, it is very easy to react with the pipeline and the components in the pipeline, resulting in the consumption of alkali metal and the damage of the pipeline; because the fan in the system needs to be directly exposed to high temperature Environment, and direct contact with the alkali metal mixed in the flowing gas, so the technical requirements for the fan are very high, which is not conducive to the realization of the project

Method used

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  • DPAL laser with local bidirectional alternative flowing gain medium
  • DPAL laser with local bidirectional alternative flowing gain medium
  • DPAL laser with local bidirectional alternative flowing gain medium

Examples

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no. 1 example

[0041] See image 3 , image 3 It shows a DPAL laser with partial bidirectional alternating flow of the gain medium according to the first embodiment of the present invention, Figure 4 for image 3 A side view of the DPAL laser, which includes a vapor chamber 18, an alkali metal generation unit, an alkali metal recovery unit, a circulation subsystem, a pump module, and a resonant assembly. in,

[0042] The steam chamber 18, the left and right sides of which are respectively connected to the circulation subsystem, and the circulation subsystem is filled with buffer gas;

[0043] an alkali metal generating unit coupled to a first location on a side of the circulation subsystem adjacent the vapor chamber;

[0044] an alkali metal recovery device connected to a second location on the other side of the circulation subsystem adjacent to the vapor chamber, thereby forming an alkali metal vapor utilization channel between the first location and the second location;

[0045] The ...

no. 3 example

[0066] In the third embodiment of the present invention, a DPAL laser with partial bidirectional alternating flow of the gain medium, in order to achieve the purpose of brief description, any description of technical features that can be used for the same application in any of the above-mentioned embodiments are all here, and there is no need to repeat the same narrative. continue to see image 3 , 4 The circulation subsystem further includes a first blower 16 and a second blower 17, and the first and second blowers 16 and 17 are placed in the pipeline far away from the vapor chamber. Preferably, the first fan 16 and the second fan 17 are symmetrically placed on both sides of the bottom section of the pipeline; the first fan 16 can make the gas in the pipeline flow clockwise, and the second fan 17 can make the gas in the pipeline flow counterclockwise. When the DPAL laser is working, the first fan 16 is used to generate airflow power in clockwise circulation mode to realize ...

no. 5 example

[0070] In the fifth embodiment of the present invention, for the DPAL laser with partial bidirectional alternating flow of the gain medium, for the purpose of brief description, any technical features described in any of the above embodiments that can be used for the same application are incorporated here, and the same description does not need to be repeated. Such as Figure 7 As shown, the height of the vertical side wall on the left side of the pipeline is greater than the height of the vertical side wall on the right side, and the steam chamber 18 is a cavity that is placed vertically and whose longitudinal section is a parallelogram, and the openings of its upper and lower cavity walls are respectively The upper and lower laser windows are formed by sealing the windows. The top of the left chamber wall is the left air outlet 54, and the bottom of the top is sealed by the window to form the left pump window. The bottom end of the right chamber wall is the right air outlet 5...

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Abstract

The invention provides a DPAL laser with local bidirectional alternative flowing gain medium. The DPAL laser comprises a steam box, an alkali metal generating device, an alkali metal recovery device, a circulation sub-system, a pumping module and a resonant module, wherein the alkali metal steam of the DPAL laser only flows in local, thus only the area adjacent to the steam box needs to maintain relative high temperature, the other areas can be at room temperature, and the requirement on the vacuum heat resistant performance of the laser is greatly reduced; as the alkali metal steam with very active chemical property is limited to be adjacent to the steam box, the alkali metal steam is prevented from being consumed by reaction between the alkali metal steam and a pipeline and components in the pipeline, and the pipeline and a fan do not need to be exposed under the high-temperature environment and are prevented from contacting the alkali metal steam, thus the pollution to the air channel and the cavity caused by the alkali metal steam is greatly reduced, and the pollution and damage to the pipeline and the fan are avoided.

Description

technical field [0001] The invention relates to the technical field of lasers, in particular to a DPAL laser with local bidirectional alternating flow of a gain medium. Background technique [0002] DPAL (Diode Pumped Alkali Vapor Laser) is a new type of optically pumped gas laser whose gain medium is alkali metal in vapor state. The temperature of the gain medium is usually 100-200°C. The gain medium of DPAL is mainly potassium, rubidium or cesium in the vapor state, and its energy level structure is as follows: figure 1 shown. figure 1 Among them, n is the number of electron shells where the outermost shell electrons are located, and the n corresponding to K, Rb, and Cs are 4, 5, and 6, respectively. wxya 1 / 2 is the ground state energy level, nP 1 / 2 and nP 3 / 2 Excited state energy levels resulting from splitting for outermost electron spin-orbit interactions. The transitions from the ground state to the two upper energy levels correspond to the D2 and D1 lines, respe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/03
CPCH01S3/031
Inventor 谭荣清黄伟李志永李辉韩高策
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI