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A passive q-switched microchip laser with tunable laser transverse mode mode

A laser and mode technology, applied in the field of lasers, can solve problems such as complex devices and unfavorable miniaturization

Active Publication Date: 2019-12-17
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The second is to directly output these three high-order modes in the laser cavity by means of scanning pumping [12] , however, limited by the scanning area, the generated pattern is relatively simple, and the device is complicated, which is not conducive to miniaturization

Method used

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  • A passive q-switched microchip laser with tunable laser transverse mode mode
  • A passive q-switched microchip laser with tunable laser transverse mode mode
  • A passive q-switched microchip laser with tunable laser transverse mode mode

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Embodiment Construction

[0036] The following embodiments will further illustrate the present invention in conjunction with the accompanying drawings.

[0037] see figure 1 , the present invention is provided with an eccentric Gaussian pump source and a laser resonance system, the eccentric Gaussian pump source is provided with an 808nm fiber-coupled laser diode 1, a first lens 2, and a second lens 3 in sequence; an 808nm fiber-coupled laser diode 1 and a second lens 3 The two lenses 3 are located on the same optical axis, the first lens 2 is fixed on the three-dimensional adjustment frame, and its position can be moved laterally;

[0038] Described laser resonant system is provided with laser gain medium Nd:YAG crystal 5, Q-switching crystal 6, anti-reflection coating and high-reflection film 4 coated on the surface of laser gain medium Nd:YAG crystal 5 and coated on the surface of Q-switching crystal 6 To the high reflective film 7 of 1064nm wavelength; Said laser gain medium Nd: YAG crystal 5, Q-s...

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Abstract

The invention provides a laser transverse mode mode-adjustable passive Q-modulation laser device and relates to laser devices. The laser transverse mode mode-adjustable passive Q-modulation laser device is provided with a decentered Gaussian pumping source and a laser device resonance system, wherein the decentered Gaussian pumping source is provided with a 808nm optical fiber coupling laser diode and two lenses in sequence; the 808nm optical fiber coupling laser diode and the second lens are located on the same optical axis; the laser device resonance system is provided with a laser gain medium Nd: YAG crystal, a Q-modulation crystal, an anti-reflection film and a high-reflection film which are plated on the surface of the laser gain medium Nd: YAG crystal and a high-reflection film with the wavelength of 1064nm and plated on the surface of the Q-modulation crystal; and the laser gain medium Nd: YAG crystal, the Q-modulation crystal, the anti-reflection film and the high-reflection film which are plated on the surface of the laser gain medium Nd: YAG crystal and the high-reflection film with the wavelength of 1064nm are fixed in the same clamp.

Description

technical field [0001] The invention relates to lasers, in particular to a passive Q-switched microchip laser with adjustable laser transverse mode mode. Background technique [0002] Laser transverse modes have attracted widespread attention because of their diversity in intensity distribution. In addition to the common fundamental mode Gaussian beam, the laser can also output many high-order laser modes, such as Laguerre-Gaussian (LG) mode, Innes-Gaussian (IG) mode and Hermitian-Gaussian ( HG) modes, which are the exact orthogonal solutions of the paraxial wave equation in free space in cylindrical coordinate system, elliptic coordinate system and Cartesian coordinate system and respectively. These higher-order modes are optically captured due to the diversity of spot shapes [1,2] , manipulating particles and biological cells [3,4] , Preparation of vortex beams and vortex arrays [5，6] and other fields have a wide range of applications. Theoretically, the three laser m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/11H01S3/16
CPCH01S3/11H01S3/1643
Inventor 董俊张明明
Owner XIAMEN UNIV