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Carbon dioxide infrared hollow-core fiber laser and manufacturing method thereof

A technology of hollow-core fiber and carbon dioxide, applied in the direction of lasers, laser components, phonon exciters, etc., to improve transmission accuracy and stability, simplify structure, and avoid poor optical coupling and instability

Inactive Publication Date: 2016-04-06
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no fiber laser that uses gas working substances to realize the output of 9.1-11.3 micron carbon dioxide laser by means of non-pump light source excitation such as radio frequency signals

Method used

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  • Carbon dioxide infrared hollow-core fiber laser and manufacturing method thereof
  • Carbon dioxide infrared hollow-core fiber laser and manufacturing method thereof
  • Carbon dioxide infrared hollow-core fiber laser and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] refer to figure 2 The hollow core fiber 1 of this specific embodiment is a quartz glass capillary hollow fiber 1 with a germanium oxide reflective film formed on the inner surface. The inner diameter of the fiber is 1.3 mm, the wall thickness is 0.07 mm, the germanium oxide film is 12 microns thick, and the length is 2.5 meters. Cut the hollow-core fiber into two sections with a length of 1.5 meters and 1 meter, which are respectively used as the resonant cavity 11 and the conducting part 12 . The total reflection mirror 2 is a gold-plated quartz reflection mirror, and the half reflection mirror 3 is a partial reflection mirror made of gallium arsenide. The total reflection mirror 2 and the half reflection mirror 3 are processed into discs with an outer diameter of 5 mm. The total reflection mirror 2 is embedded in the first ferrule 4 with a plane concave circular hole with an inner diameter of 5 mm, and inserted into one end of the resonant cavity 11 to realize the c...

Embodiment 2

[0052] refer to image 3 The hollow-core fiber 1 of this specific embodiment is a quartz glass capillary hollow-core fiber with a germanium oxide reflection film formed on the inner surface. In order to shorten the size of the laser, the resonant cavity 11 is wound into a winding arrangement by utilizing the flexibility of the hollow-core fiber. The winding resonant cavity 11 can prolong the excited length of the gas working substance 6 and improve the CO 2 The laser output power of the laser can be reduced, while the volume of the resonant cavity 11 can still be kept small.

[0053] The resonant cavity 11 can be wound by using the hollow-core optical fiber 1 in the first embodiment above. In order to further reduce the volume of the winding-type ground resonator 11, the inner diameter and wall thickness of the hollow-core optical fiber 1 are further reduced in this embodiment. The inner diameter of the hollow-core optical fiber 1 is 0.8 millimeters, and the wall thickness is...

Embodiment 3

[0058] refer to Figure 4 The hollow-core optical fiber 1 of this specific embodiment is an alumina total reflection hollow-core optical fiber, and the resonant cavity 11 is coiled and arranged on the inner sleeve of the inner and outer sleeve-type nickel capacitor electrodes by utilizing the flexibility of the hollow-core optical fiber. The arrangement of the inner and outer sleeve-type capacitive electrodes can make it easier to fix the winding position of the hollow-core fiber, and at the same time, the radio frequency signal covers the hollow-core fiber more fully, and the working material in the hollow-core fiber 1 is more fully stimulated. The winding resonant cavity 11 can prolong the excited length of the gas working substance 6 and improve the CO 2 The laser output power of the laser can be reduced, while the volume of the resonant cavity 11 can still be kept small.

[0059]The resonant cavity 11 can also be wound by using the hollow-core optical fiber 1 in the first...

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Abstract

The invention discloses a carbon dioxide infrared hollow-core fiber laser comprising a hollow-core fiber which is divided into a resonant cavity and a conduction part which is arranged to be integrated with the resonant cavity, wherein the resonant cavity is arranged in a straight, folding or winding shape; a total reflection mirror which is installed at one end of the resonant cavity; a semi-reflecting mirror which is installed at the other end of the resonant cavity; gas work material which fills in the resonant cavity; and an excitation system which is arranged between the total reflection mirror and the semi-reflecting mirror. The excitation system is a radio frequency excitation system, a high-voltage DC excitation system or a microwave excitation system and excites the gas work material in a non-pumping light source excitation mode. Energy level transition of the gas work material occurs so that population inversion is realized and laser is generated in the resonant cavity, and laser is incident into the condition part to be conducted through the semi-reflecting mirror. Manufacturing cost can be reduced by miniaturized equipment, and transmission precision and stability in the actual application of CO2 laser can be enhanced. The invention also discloses a manufacturing method of the carbon dioxide infrared hollow-core fiber laser.

Description

technical field [0001] The invention relates to the field of optoelectronics and devices, in particular to a carbon dioxide infrared hollow-core fiber laser and a manufacturing method thereof. Background technique [0002] Long-wave infrared electromagnetic waves, especially CO with a wavelength in the second atmospheric window (8-14μm) 2 Lasers play an important role in both military and civilian applications. CO 2 The laser spectrum is rich, there are about 140 spectral lines in the range of 9.1-11.3 microns, and the spectral line width is narrow, and CO 2 The energy conversion efficiency and output power of the laser are high, and the laser can be used in active infrared laser detection, laser life medicine, narrow-bandgap semiconductor electronic spin regulation, laser weapons, laser ignition, material molding processing, and long-wave infrared information transmission, etc. field. [0003] Carbon dioxide lasers are based on CO 2 A gas laser with gas as the gas work...

Claims

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Application Information

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IPC IPC(8): H01S3/223H01S3/067
Inventor 敬承斌王旭越方禹杨平雄李波郭文锋褚君浩
Owner EAST CHINA NORMAL UNIV
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