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All-solid-state yellow light laser based on double-doped crystal

A dual-doping, laser technology, applied in the field of biomedicine, can solve the problems of continuous operation, low output power of yellow laser, low cross-section of stimulated emission, etc., to improve stability, reduce energy level life, fast reverse effect

Active Publication Date: 2019-12-03
SUZHOU INST OF BIOMEDICAL ENG & TECH CHINESE ACADEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since Dy 3+ The ions have a low stimulated emission cross-section and the particles at the lower energy level of the laser cannot relax rapidly to the ground state, resulting in single-doped Dy 3+ The output power of the yellow laser is too small to achieve efficient and stable continuous operation

Method used

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  • All-solid-state yellow light laser based on double-doped crystal
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  • All-solid-state yellow light laser based on double-doped crystal

Examples

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Embodiment 1

[0042] On the basis of the foregoing embodiments, in this embodiment, the host of the double-doped laser gain medium 8 is Y 3 sc 2 Ga 3 o 12 (YSGG), the auxiliary dopant ion is Tb 3+ . The double-doped laser gain medium 8 is specifically Dy-Tb:Y 3 sc 2 Ga 3 o 12 (YSGG) crystals. Both beam shaping modules use prism pairs, and the focusing lens module 6 uses a single lens.

[0043] In this embodiment, Dy-Tb double doping is used to realize Dy 3+ of 6 h 13 / 2 with Tb 3+ of 7 f 4 The resonance energy transfer of the energy level, using the oxide YSGG with high phonon energy as the substrate, accelerates the particle number transfer of the lower energy level of the laser through multiphonon relaxation, and reduces the energy level of the lower energy level of the laser through the above two methods Long lifespan, rapid inversion of the number of particles, and improvement of the stability of the laser output.

Embodiment 2

[0045] Basically the same as embodiment 1, the difference is that the matrix of the double-doped laser gain medium 8 is GdScO 3 (GSO), the auxiliary dopant ion is Tb 3+ , the dual-doped laser gain medium 8 is specifically Dy-Tb:GdScO 3 (GSO) crystals. The two beam shaping modules both use cylindrical mirror pairs, and the focusing lens module 6 uses a single lens.

Embodiment 3

[0047] It is basically the same as Embodiment 1, except that the host of the double-doped laser gain medium 8 is Y 3 sc 2 Ga 3 o 12 (YSGG), the auxiliary dopant ion is Eu 3+ , the dual-doped laser gain medium 8 is specifically Dy-Eu:YSGG crystal. The focusing lens module 6 is an aspherical lens. By introducing co-doped ions as Eu 3+ , using Dy 3+ of 6 h 13 / 2 with Eu 3+ of 7 f 4 Resonant energy transfer occurs, reducing the lifetime of the lower energy level of the laser.

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Abstract

The invention discloses an all-solid-state yellow light laser based on a double-doped crystal. The laser comprises a pumping system and a resonant cavity. The pumping system comprises two semiconductor lasers, two beam shaping modules, a polarization combining module and a focusing lens module. A dual-doped laser gain medium comprises a Dy3+ doped oxide matrix and auxiliary doped ions. According to the invention, the stimulated radiation of 4F9 / 2 to 6H13 / 2 in Dy3+ is used to directly generate yellow laser without a non-linear frequency conversion process; the problem of complex structure of the current all-solid-state yellow laser is fundamentally solved; the laser medium provided by the invention uses the double-doped oxide crystal, and particle number consumption at 6H13 / 2 energy level is accelerated through multiphonon relaxation; the introduction of co-doped ions (Tb3+ / Eu3+) achieves energy transfer under the laser level, reducing the energy level lifetime of 6H13 / 2; fast inversionof the number of particles is realized; and the stability of yellow laser output is improved.

Description

technical field [0001] The invention relates to the field of biomedicine, in particular to an all-solid-state yellow laser based on double-doped crystals. Background technique [0002] All solid-state yellow lasers play an important role in biomedical instruments, optical storage, precision measurement, lighting display, and other fields. Especially in biological analysis and clinical treatment, the yellow light laser is the excitation light of fluorescent dyes, and has become the standard light source for flow cytometers and super-resolution microscopes; hemoglobin has a strong absorption peak in the yellow light band, and in capillaries Dilatation and clinical treatment of macular degeneration play an important role. Therefore, obtaining efficient and stable yellow laser has important research significance and application value. [0003] Dye lasers can directly generate yellow light, which is the main method for obtaining yellow laser light in the early days. However, i...

Claims

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Application Information

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IPC IPC(8): H01S3/094H01S3/16H01S3/06G02B27/09G02B27/28
CPCG02B27/0966G02B27/0972G02B27/283H01S3/0623H01S3/094H01S3/1606
Inventor 高静李长磊姚文明田玉冰陈建生邓力华檀慧明
Owner SUZHOU INST OF BIOMEDICAL ENG & TECH CHINESE ACADEMY OF SCI
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