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Air-cooled all-solid 526nm pulsed laser

A 526nm, pulsed laser technology, applied to lasers, laser parts, phonon exciters, etc., can solve the problems of low output power, limited practicability, and complex structure of lasers, and achieve good energy storage effects, convenient use, and fluorescent long life effect

Inactive Publication Date: 2011-11-16
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

In 2010, Y.B.Zhang et al adopted Nd:YLiF 4 As a laser crystal, 2.15W 526nm green light output is obtained through intracavity frequency doubling. However, the laser crystal uses a thermoelectric cooling chip (TEC) for heat dissipation, and the structure is relatively complicated. The output power of the laser is small and continuous, and its practicability is limited.

Method used

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  • Air-cooled all-solid 526nm pulsed laser
  • Air-cooled all-solid 526nm pulsed laser

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Embodiment Construction

[0022] Depend on figure 1 It can be seen that the composition of the air-cooled all-solid-state 526nm pulse laser of the present invention includes a U-shaped resonator, a pump unit at both ends and an output coupling unit:

[0023] The U-shaped resonant cavity includes a planar cavity mirror 3-10 and a plano-concave cavity mirror 3-1, and between the plano-concave cavity mirror 3-1 and the planar cavity mirror 3-10 are sequentially Q-switched crystals 3-2 , quarter-wave plate 3-3, polarizer 3-4, first plane mirror 3-5, two pieces of Nd:YLiF 4 Crystal 3-6, 3-7, second plane mirror 3-8, third plane mirror 4-1, frequency doubling crystal 3-9, described first plane mirror 3-5 and second plane mirror 3-8 pair pump light High transparency, high reflection to oscillating light, placed in the cavity at 45° to the oscillating light path, forming a U-shaped resonant cavity;

[0024] The laser crystal is two pieces of Nd:YLiF 4 Crystals 3-6, 3-7 are connected in series, and have an a...

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Abstract

The invention provides an air-cooled all-solid 526nm pulsed laser. A laser crystal is formed by connecting two neodymium-doped lithium yttrium fluoride crystals in series and has an air-cooled heat dissipation structure. In a laser resonator, a U-shaped cavity is adopted; two laser diodes working in a pulse mode are used for pumping Nd:YLiF4 crystals from an end face; 1053nm fundamental frequency pulsed light is generated under the action of an electro optical Q switch; and lithium triborate crystals are subjected to intracavity frequency doubling to generate 526nm pulsed green light which is output. The laser has the characteristics of compact structure, high output pulse energy and reliability and stability in operation.

Description

technical field [0001] The invention relates to a solid-state laser, in particular to an air-cooled all-solid-state 526nm pulse laser. Background technique [0002] Scientific research shows that the attenuation of the blue-green laser in the 450-530nm band is the smallest in seawater, and the maximum penetration depth can be greater than 600m. Using lasers working in the blue-green band can develop new equipment for underwater target detection, underwater communication and ranging. [0003] Since Nd:YLiF 4 It has excellent thermal performance and natural birefringence effect, which can keep the resonant cavity stable in a larger range, so it can be used for Nd:YLiF 4 The 1053nm fundamental wave output by the crystal is frequency-doubled to obtain an efficient, stable and reliable 526nm laser output. In 2010, Y.B.Zhang et al adopted Nd:YLiF 4 As a laser crystal, 2.15W 526nm green light output is obtained through intracavity frequency doubling, but the laser crystal uses ...

Claims

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Application Information

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IPC IPC(8): H01S3/0941H01S3/16H01S3/042H01S3/081
Inventor 陆婷婷朱小磊王君涛
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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