Blue laser system

A blue laser and laser medium technology, which is applied in the field of blue laser systems, can solve problems such as poor laser stability, low conversion efficiency, and difficulty in improving conversion efficiency, and achieve stable performance, simplified structure, and stable mode and output power.

Inactive Publication Date: 2007-08-01
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

[0004] ZL200410039213.1 focuses on the description of end-pumped straight cavity structure and composite rod technology to obtain blue laser; CN02118767.3 focuses on the description of the self-frequency doubling laser dielectric material doped with neodymium gadolinium aluminum borate; CN02117362.1 and CN02117365. 6 mainly involves the technology of producing red, green and blue primary colors at the same time, the laser stability is poor, and the conversion efficiency is also difficult to improve; CN02118770.3 and CN02118769.X focus on describing the laser structure of self-frequency doubling materials, and the conversion efficiency is relatively low. Low

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Embodiment 1

[0033] Please refer to FIG. 1 . FIG. 1 is a schematic structural diagram of Embodiment 1 of the blue laser system of the present invention. As can be seen from the figure, the blue laser system of the present invention belongs to an end-pumped straight cavity structure, including a laser diode pump source 1, and an optical coupling system is sequentially arranged along the forward direction of the light beam emitted by the laser diode pump source 1 6. The incident cavity mirror 7, the laser medium 8, the frequency doubling crystal 9 and the exit cavity mirror 10, the optical coupling system 6 converges the divergent beam of the laser diode pump source 1, and the focal point of convergence is inside the laser medium 8, and the laser medium 8 It is Nd-doped yttrium aluminum garnet crystal, and frequency doubling crystal 9 is barium borate crystal.

[0034] The resonant cavity of the blue laser system of the present invention is composed of the exit end face of the entrance cavit...

Embodiment 2

[0042] Please refer to FIG. 3 . FIG. 3 is a schematic structural diagram of Embodiment 2 of the blue laser system of the present invention. It can be seen from the figure that the blue laser system in this embodiment belongs to the end-pumped straight cavity structure, including a laser diode pump source 1, and the laser diode pump source 1 is sequentially arranged along the forward direction of the light beam. Optical coupling system 6, laser medium 8, frequency doubling crystal 9 and exit cavity mirror 10, optical coupling system 6 converges the divergent light beam of laser diode pump source 1, the focus of convergence is inside the laser medium 8, and the laser medium 8 is doped Neodymium yttrium aluminum garnet crystal, frequency doubling crystal 9 is barium borate crystal.

[0043] The incident cavity surface of the laser medium 8 and the incident end surface of the exit cavity mirror 10 constitute the resonant cavity of the blue laser system of the present invention, an...

Embodiment 3

[0048] The structure of the blue laser system of embodiment 3 is the same as that of embodiment 2, except that the film system of the sixth film layer 93 on the incident end face of the frequency doubling crystal 9 is R95%@473nm , the film system of the third film layer 803 on the incident end surface of the laser medium 8 is R99.5%@9046nm&R<30%@1342nm&R<10%@808.5nm. In this way, the requirements for coating the incident end face of light with a wavelength of 473nm are transferred to the incident end face of the frequency doubling crystal 9, which reduces the difficulty of coating the incident end face.

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Abstract

The invention relates to blue laser system, its structure includes laser diode pumping source and optically coupled system and resonant cavity which are set along the beam direction, the laser medium and multiple frequency crystal are in the resonant cavity, the pumping source, laser medium and multiple frequency crystal are set on the heat sink which is set on heat conducting board, the heat conducting board is appressed to the cool end of the refrigerating plate, the hot end of the refrigerating plate is appressed to a cooling plate, a layer of thermal insulator is set between the refrigerating plate and cooling plate, temperature sensor is set on the heat sink of the pumping source, the cooling plate and temperature sensor are separately connected with the temperature controller via wires. The blue laser system of the invention is simple, the output mode and output power of the laser are stable, and the efficiency of the laser is high.

Description

technical field [0001] The invention relates to a laser, in particular to a blue laser system with frequency doubling in a laser diode end-pumped cavity. Background technique [0002] Due to the advantages of high efficiency, long life, convenient use, compact structure and stable performance, all-solid-state solid-state lasers pumped by laser diodes have become a hot spot in international research and development in recent years. Blue lasers are widely used in optical storage, digital video technology, spectrum technology, laser medical treatment, laser demonstration and laser multimedia technology; blue lasers can also form a three-color laser light source with red and green lasers. [0003] In order to obtain blue laser, many patents relate to the method of making blue laser, such as ZL200410039213.1, CN02118767.3, CN02117365.6, CN02117362.1, CN02118770.3, CN02118769.X. [0004] ZL200410039213.1 focuses on the description of end-pumped straight cavity structure and compo...

Claims

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Application Information

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IPC IPC(8): H01S3/00H01S3/0941H01S3/08H01S3/042H01S5/024H01S3/109H01S3/16
Inventor 林强王宪涛王利朱健强
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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