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Excimer broadband pumped alkali metal blue laser

An alkali metal and excimer technology, applied in the field of alkali metal laser, can solve the problem of blue laser power bottleneck and other problems, and achieve the effect of good magnification, good magnification, and good calibration amplification.

Active Publication Date: 2019-02-05
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a new method based on excimer broadband pumping alkali metal laser to directly realize the output of blue light laser, expand the alkali metal laser to the field of blue light laser application, and can solve the current blue light laser power bottleneck problem

Method used

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  • Excimer broadband pumped alkali metal blue laser
  • Excimer broadband pumped alkali metal blue laser
  • Excimer broadband pumped alkali metal blue laser

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] see attached figure 1 As shown, the main structure of the present invention includes: a pumping source a 1, a pumping source b 2, an alkali metal vapor pool 3, a heating furnace 4, a high reflection mirror 5, an output coupling mirror 6, a two-way Color mirror 7, a polarization beam splitting cube 8, a focusing lens 9.

specific Embodiment approach

[0027] The pump source a 1 outputs a P-polarized narrow-linewidth laser with a wavelength of D corresponding to cesium metal 2 line 852nm, the pump source b 2 outputs P-polarized wide-linewidth laser light with a wavelength of 925nm, which is transmitted through the dichroic mirror 7 and is collinear with the output laser light of the pump source a 1 reflected by the dichroic mirror 7, Two beams of P-polarized pumping lasers are focused to the center of the alkali metal vapor pool 3 by the focusing lens 9, and transmit through the polarization beam splitting cube 8 and enter the alkali metal vapor pool 3 from the end face for pumping; the alkali metal vapor pool 3 is filled with enough amount of cesium metal, while the alkali metal vapor pool 3 is also filled with helium as a buffer gas, the inflation pressure at normal temperature is 2000torr, the alkali metal vapor pool 3 is heated to 300°C by the heating furnace 4, the cesium vapor at this temperature The air pressure is 2....

Embodiment 2

[0030] see attached figure 2 As shown, the main structure of the present invention includes: a pumping source a 1, a pumping source b 2, an alkali metal vapor pool 3, a heating furnace 4, a high reflection mirror 5, an output coupling mirror 6, a two-way Color mirror 10, a focusing lens 11.

[0031] The specific implementation method is:

[0032] The pump source a 1 outputs a narrow linewidth laser with a wavelength of D corresponding to cesium metal 2 Line 852nm, the wide-linewidth laser output by pump source b2, with a wavelength of 920nm, is transmitted through dichroic mirror 10, and is collinear with the output laser light of pump source a1 reflected by dichroic mirror 10, two beams The pumping laser light is focused to the center of the alkali metal vapor pool 3 by the focusing lens 11, and is transmitted through the high reflection mirror 5 and enters the alkali metal vapor pool 3 from the end face for pumping; the alkali metal vapor pool 3 is filled with a sufficien...

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Abstract

The invention relates to an excimer broadband pumped alkali metal blue laser, comprising a pump source a, a pump source b, an alkali metal vapor pool, a heating furnace, a high reflectivity mirror, and an output coupling mirror. The alkali metal laser is suitable for using an alkali metal such as potassium, rubidium or caesium as a gain medium. By means of the cascade pumping method, the pump source a outputs a narrow linewidth laser to excite the alkali metal of the n2P3 / 2 level. The first electronically excited alkali metal and inert gases form an A2pi3 / 2 level excimer with a higher bindingenergy, and a pump source b outputs a wide linewidth laser to excite the A2 pi 3 / 2 level excimer to the I2 sigma +1 / 2 level. The I2 sigma +1 / 2 level is rapidly decomposed into inert gases and alkali metal atoms of the (n+1)2P3 / 2 level. The alkali metal atoms return to the n2S1 / 2 level from the (n+1)2P3 / 2 level, directly producing blue laser. Through the method, an alkali metal blue laser can be applied to the field of high-energy blue laser; and extended to a violet laser or other laser with a shorter wavelength. In the method, a laser structure is similar in design to current diode-pumped alkali metal lasers and is easy to implement.

Description

technical field [0001] The invention relates to the technical field of alkali metal lasers, in particular to a new method for generating blue light lasers through alkali metal vapors. Background technique [0002] Due to the particularity of its wavelength, blue light laser has a very broad application prospect in underwater optical communication, marine resource detection, ultrashort pulse, laser spectroscopy, high-density optical storage, laser biomedicine, laser refrigeration and other fields. At present, the output power of blue-ray lasers is still very limited. The relatively mature blue-ray laser technology uses diode-pumped solid-state lasers, and then obtains blue light through frequency doubling and sum-frequency methods to achieve tens of watts of blue light output. Although this technical route has the characteristics of high efficiency, small size, long life, compact structure, and good reliability, there are serious limiting factors in the development of diode-p...

Claims

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Application Information

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IPC IPC(8): H01S3/03H01S3/0943H01S3/227
CPCH01S3/031H01S3/0943H01S3/227
Inventor 胡墅盖宝栋郭敬为刘金波金玉奇
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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