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A technology of alkali metals and lasers, which is applied to lasers, laser parts, laser parts, etc., can solve problems such as alkali metal vapor condensation, and achieve the effects of uniform gain distribution, high thermal conductivity, and high uniformity
Inactive Publication Date: 2014-07-16
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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[0005] The present invention aims to solve the disadvantages and limitations faced when the alkali metal vapor condenses on the window in the existing alkali metal laser, thereby providing a heat pipe type alkali metal vapor laser with a compact structure and stable operation
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specific Embodiment approach 1
[0023] Specific implementation mode one: as figure 2 Shown, a heat pipe type alkali metal vapor laser, including a gain unit and a resonant cavity.
[0024] The gain unit is a heat pipe structure, including a tube shell 15, a left window 16, a right window 17, a heater 10, a left cooler 8, a right cooler 13, a liquid-absorbing core 11, a left insulating material layer 9, and a right insulating material layer 12. The left inflation port 7 and the right inflation port 14. The heater 10 , the right refrigerator 13 , the liquid-absorbing core 11 , the left heat-insulating material layer 9 and the right heat-insulating material layer 12 are all ring-shaped structures sleeved on the tube shell 15 .
[0025] The tube shell 15 is made of stainless steel, which is compatible with the alkali metal vapor, that is, during the operation of the laser, the alkali metal vapor and the tube shell 15 will not undergo significant chemical reactions or physical changes. The left window 16 and t...
Embodiment approach 2
[0029] Implementation mode two: if image 3 As shown, on the basis of Embodiment 1, in order to reduce the intracavity loss of the laser, a Brewster window is applied to the gain unit, and the left window 21 and the right window 22 at both ends of the tube shell 15 are Brewster windows , forming an angle with the optical axis of the laser resonator. In this way, the linearly polarized light oscillating in the resonant cavity will pass through the left and right windows without reflection loss, thereby reducing the loss in the cavity.
[0030]Taking the rubidium vapor laser medium as an example, the specific working process of the heat pipe type external cavity alkali metal vapor laser described in Embodiment 2 is as follows: the temperature of the heater is set at a temperature higher than the melting point of rubidium (39.3°C), and the temperature is set to refrigerate. The temperature of the device is set at a certain temperature below the melting point of rubidium. After ...
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Abstract
The invention belongs to the technical field of lasers, and discloses a heat-pipe-type alkali-metal vapor laser device which is used for solving the problem that vapor coagulates on windows in an existing alkali-metal vapor laser device. A gain unit is designed to be of a heat pipe structure. A left window and a right window are arranged at the two ends of a pipe shell and sealed. The center of the pipe shell is sleeved with a heater. A left refrigerator and a right refrigerator are symmetrically arranged at equidistant positions of the two ends of the heater. The space between the left refrigerator and the heater is filled with a left thermal insulation material layer, and the space between the right refrigerator and the heater is filled with a right thermal insulation material layer. The pipe shell is lined with a liquid absorption core, and the liquid absorption core extends from the left end of the left refrigerator to the right end of the right refrigerator in the length direction. A left inflation inlet is formed between the left window and the left refrigerator and is adjacent to the left window, and a right inflation inlet is formed between the right window and the right refrigerator and is adjacent to the right window. A resonant cavity is of an L-shaped structure formed by an output mirror, a totally-reflecting mirror and a polarization beam splitter, the output mirror is arranged above the polarization beam splitter, and the totally-reflecting mirror is arranged on the right of the polarization beam splitter. The gain unit is placed between the polarization beam splitter and the totally-reflecting mirror.
Description
technical field [0001] The invention belongs to the technical field of lasers, in particular to a heat pipe type alkali metal vapor laser. Background technique [0002] The near-infrared laser source with high efficiency, high power and high beam quality has always been the research goal and direction of many researchers in the laser field. It has broad application prospects in many fields such as industry, medical treatment, military and scientific research. In recent years, LD-pumped alkali metal vapor lasers have become a major research hotspot in the laser field due to their potential advantages of high efficiency, high power and high beam quality output. [0003] The alkali metal gain medium of this laser exists in the form of atomic vapor, so it needs to be sealed in a transparent gain cell. Due to the very active chemical properties of alkali metals, no oxygen or water vapor should exist in the gain cell. Usually, the solid alkali metal is first sealed in the gain c...
Claims
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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/03H01S3/06H01S3/041H01S3/034
Inventor 陈飞徐艳高飞谢冀江李殿军杨贵龙郭劲
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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