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All-solid-state femtosecond laser of Kerr mode-locked ytterbium-doped lanthanum gadolinium silicate crystal

A femtosecond laser, ytterbium gadolinium silicate technology, applied in lasers, laser parts, phonon exciters, etc., can solve the problems of large size, high maintenance cost, limited development and application, etc., and achieve a widened emission spectral bandwidth , the effect of wide emission spectral bandwidth and short pulse laser output

Pending Publication Date: 2020-07-31
MAANSHAN HUAYU ENVIRONMENTAL PROTECTION EQUIP MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the commercialized femtosecond lasers are mainly mode-locked Ti:sapphire lasers, but because the absorption peak of Ti:sapphire crystals is in the visible band, it cannot be directly pumped by LD, and generally only argon ion lasers (wavelength 515nm) or Nd 3+ The green light (532nm) obtained by doping solid-state laser frequency doubling is used as the pump source, resulting in complex structure, bulky volume and high maintenance cost of the laser, which limits its development and application

Method used

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  • All-solid-state femtosecond laser of Kerr mode-locked ytterbium-doped lanthanum gadolinium silicate crystal
  • All-solid-state femtosecond laser of Kerr mode-locked ytterbium-doped lanthanum gadolinium silicate crystal
  • All-solid-state femtosecond laser of Kerr mode-locked ytterbium-doped lanthanum gadolinium silicate crystal

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Embodiment 1

[0030] A Kerr mode-locked all-solid-state femtosecond laser doped with ytterbium gadolinium lanthanum silicate crystal of the present embodiment, such as figure 1 As shown, it includes a pump 1, the pump light source 11 horizontally output by the pump 1 is emitted to the focusing lens 3 through the fiber coupler 2; the pump light source 11 is focused into a focused light source 31 through the focusing lens 3, and transmitted through Through described Yb: GLSO crystal 5 is launched on the concave mirror II42, and described concave mirror II42 reflects the femtosecond laser that passes through in the described Yb: GLSO crystal 5 to SF on the prism 6, is used for compensating the dispersion in the cavity; The femtosecond laser passes through the SF6 triangular prisms 6 arranged in pairs and then passes through the laser output coupling mirror 44 to realize the laser output; as image 3 As shown, the Yb:GLSO crystal 5 has a strong absorption effect in the range of 900-1000nm, and ...

Embodiment 2

[0032] A Kerr mode-locked all-solid-state femtosecond laser doped with ytterbium-doped gadolinium-lanthanum silicate crystal of the present embodiment, the basic structure is the same as that of embodiment 1, the differences and improvements are as follows: figure 1 As shown, the Yb:GLSO crystal 5 was wrapped with indium foil in advance, and fixed on the copper water-cooled heat sink, and the temperature of the water-cooled heat sink was stabilized at about 16°C by active control, and then the Yb:GLSO The crystal 5 is placed in the femtosecond laser at Brewster's angle to reduce the adverse effect of waste heat on laser oscillation; the Yb:GLSO crystal 5 includes left and right end faces 51, and surrounding sides 52, such as figure 2 As shown, the left and right end surfaces 51 of the Yb:GLSO crystal 5 are polished to make it have a high surface finish, and maintain a good parallelism between the two end surfaces 51; the pumping light source 11 is in the Yb:GLSO The right end...

Embodiment 3

[0035] A Kerr mode-locked all-solid-state femtosecond laser doped with ytterbium-doped gadolinium-lanthanum silicate crystal of the present embodiment, the basic structure is the same as that of embodiment 2, the differences and improvements are as follows: figure 1 As shown, the laser reflected by the concave mirror 141 realizes the retroreflection of the laser through the plane reflector 43. 1. When the aperture of the emission hole is smaller than the diameter of the focal spot, the laser light in the X-shaped optical resonant cavity 4 continuously oscillates to meet the conditions such as particle beam inversion.

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Abstract

The invention discloses an all-solid-state femtosecond laser of a Kerr mode-locked ytterbium-doped lanthanum gadolinium silicate crystal, and belongs to the technical field of functional crystal material laser output. The all-solid-state femtosecond laser of the Kerr mode-locked ytterbium-doped lanthanum gadolinium silicate crystal comprises a pump, and a pump light source horizontally output by the pump is emitted to a focusing lens through an optical fiber coupler; the pump light source is focused into a focusing light source through the focusing lens, is emitted to the concave mirror II through the Yb: GLSO crystal, and then oscillates in a resonant cavity formed by the concave mirror I, the concave mirror II and the plane mirror to realize laser output; then the light is reflected to the SF6 triple prism through the concave mirror II and is used for compensating chromatic dispersion in the cavity; and finally, femtosecond pulse laser output is realized through the laser output coupling mirror.

Description

technical field [0001] The invention relates to the technical field of laser output of functional crystal materials, in particular to a Kerr mode-locked all-solid-state femtosecond laser doped with ytterbium-doped gadolinium-lanthanum silicate crystal. Background technique [0002] In 1981, the advent of the world's first femtosecond dye laser marked that the development of ultrafast lasers had entered the femtosecond (10-15s) stage, and thus produced femtosecond laser technology and science. Due to its unique characteristics of ultrashort pulse, high peak power and wide spectrum, femtosecond laser has been widely used in ultrafast time-resolved spectroscopy, biomedicine, optical clocks, metrology, microelectronics processing, Fields such as high-capacity optical communications have played an important role. In 1991, the world's first femtosecond Ti:Sapphire laser was born, marking the femtosecond laser entering a new era of solid-state femtosecond laser. Its characteristic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/06H01S3/08H01S3/081H01S3/094H01S3/102H01S3/108H01S3/11H01S3/16
CPCH01S3/0602H01S3/08059H01S3/0811H01S3/0815H01S3/094026H01S3/102H01S3/108H01S3/1106H01S3/1618H01S3/1655
Inventor 孙艳秋权岚俞海云
Owner MAANSHAN HUAYU ENVIRONMENTAL PROTECTION EQUIP MFG
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