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Laser diode side pumped thulium/holmium double doped lithium lutetium fluoride crystal laser

A technology of laser diodes and lutetium lithium fluoride, which is applied in the field of lasers, can solve the problems that lasers cannot obtain high-power laser output, and achieve the effects of easy high-power laser output, lower pumping threshold, and large absorption coefficient

Inactive Publication Date: 2007-09-19
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

[0007] It can be seen that this end-pumped laser cannot obtain high-power laser output, which is far from enough for many applications

Method used

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  • Laser diode side pumped thulium/holmium double doped lithium lutetium fluoride crystal laser
  • Laser diode side pumped thulium/holmium double doped lithium lutetium fluoride crystal laser
  • Laser diode side pumped thulium/holmium double doped lithium lutetium fluoride crystal laser

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Embodiment Construction

[0024] Please refer to Fig. 3 first. Fig. 3 is a schematic structural view of the thulium-holmium double-doped lutetium lithium fluoride crystal laser pumped by the side of the laser diode of the present invention. A lutetium lithium crystal laser includes a laser diode array 1, a coupling system 2, and a laser resonator 3 that are initially coupled by a microcylindrical lens. The coupling system 2 is composed of two orthogonally arranged cylindrical lenses 201, 202, The two cylindrical lenses are respectively coupled to the fast axis and slow axis directions of the laser diode array 1; the laser resonator 3 is composed of a rear reflector 301 and a front reflector 303, and a Tm:Ho:LuLF crystal is placed in the middle 302, the rear reflector 301 is coated with a total reflection film for 2.053 μm wavelength light, the front reflector 303 is an output mirror, coated with a partial transmission film for 2.053 μm wavelength light, one of the Tm:Ho:LuLF crystals 302 The side is co...

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Abstract

The invention provides a crystal laser device side pumped by laser diode and employing a fluorinated lutetium-lithium crystal dual-doped with thulium and holmium, which is characterized by adopting laser diode array side pump; a laser resonance cavity consists of a back reflection mirror and a front reflection mirror between which Tm:Ho:LuLF crystal is disposed. The invention has compact structure, low pumping threshold value, large pulse energy and the laser output wavelength is approximately 2 mum m, and the pulse repetition frequency is adjustable, so that the invention has widely application prospect on the aspects of laser ranging, coherent Doppler wind-finding radar and so on.

Description

technical field [0001] The invention relates to a laser, especially a thulium-holmium double-doped lutetium-lithium fluoride crystal laser pumped by the side of a laser diode, especially the whole cavity structure and the pumping mode of a semiconductor diode. Background technique [0002] Nd:CaWO with scheelite structure 4 Crystal is the first crystal to achieve continuous laser output at room temperature, and yttrium lithium fluoride (hereinafter referred to as YLF) crystal is a very useful laser host crystal that has been screened from scheelite structure crystal materials after calcium scheelite crystal. It has a tetragonal crystal structure, and trivalent rare earth ions can replace Y 3+ Lattice, without charge compensation, so many rare earth ions have achieved polarized laser output after doping. Thulium Tm 3+ and Holmium Ho 3+ At the same time, when it is doped in YLF crystal, it can generate laser light with a wavelength of 2 μm. [0003] See Figure 1, Tm 3+ a...

Claims

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Application Information

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IPC IPC(8): H01S3/0941H01S3/08H01S3/06H01S3/16
Inventor 赵媛媛陈卫标侯霞乔亮
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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