Tm3+ doping-based fluoride glass microsphere laser

A glass microsphere, fluoride technology, applied in the direction of active medium materials, etc., can solve the problems of difficult temperature control, surface cracks, easy deterioration of surface quality, etc., and achieve the effect of miniaturization, simple structure, and integration.

A glass microsphere, fluoride technology, applied in the direction of active medium materials, etc., can solve the problems of difficult temperature control, surface cracks, easy deterioration of surface quality, etc., and achieve the effect of miniaturization, simple structure, and integration.

CN109768465AInactive Publication Date: 2019-05-17HARBIN ENG UNIV
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  • Tm3+ doping-based fluoride glass microsphere laser
  • Tm3+ doping-based fluoride glass microsphere laser
  • Tm3+ doping-based fluoride glass microsphere laser

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Embodiment

[0026] With reference to the above-mentioned technical principles, the Tm doping has been completed in the embodiments of the present invention. 3+ The realization of the ZBYA fluoride glass microsphere 2μm laser, the specific process is as follows:

[0027] The prepared microspheres are coupled with the micro-nano optical fiber, and one end of the optical fiber is connected to the pumping source, and the pumping source used is a conductor laser with a center wavelength of 808nm and a half. The other end is connected to a spectrometer to observe the laser output. The structure of the whole laser is simple, and the pump source excites Tm-doped 3+ ZBYA fluoride glass microspheres can get 2μm laser. The excitation process mainly uses the evanescent field of the tapered fiber to couple the pump laser into the microsphere, and finally outputs the laser through the WGM mode. When the 808nm pump source is set to 5.6mW, by optimizing the coupling position of the microsphere and the ...

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Abstract

The invention relates to a Tm3+ doping-based fluoride glass microsphere laser, which belongs to the field of solid lasers and mainly comprises a micro-nano optical fiber, a fluoride glass microsphereof the ZYA doped with Tm3+, a pump source and a spectrometer. The pump source, the micro-nano optical fiber, the fluoride glass microsphere of the ZYA doped with Tm3+ and the spectrometer are coupledby a single-mode optical fiber in sequence. The method adopts a CO2 laser micromachining mode to prepare the fluoride glass microsphere of the ZYA doped with Tm3+, and realizes the 2-micron laser output of the fluoride glass microsphere of the ZYA doped with Tm3+. The laser in the invention has the characteristics of low threshold value and high Q value; and the structure is simple, the miniaturization and integration of the laser can be realized under a low threshold value, and a new matrix material is provided for the laser technology. The 2-micron laser obtained by the invention can be applied to the fields of integrated photonics, low-threshold laser, high-sensitivity biosensing, cavity photodynamics and the like.

Description

technical field [0001] The invention belongs to the field of solid fiber lasers, in particular to a Tm-based 3+ Doped fluoride glass microsphere lasers. Background technique [0002] The microsphere laser is based on the whispering gallery mode Whispering Gallery Modem, that is, the microcavity laser of WGM. WGM has the characteristics of long coherence length, narrow spectral linewidth, low threshold, high conversion efficiency, high-speed modulation, etc. The resonant cross-section of its microcavity is a ring structure, and the total internal reflection cycle of light along the boundary of the ring cross-section continuously forms resonance. There are many shapes of WGM-mode microcavities, including spherical, bottle-shaped, disk-shaped, and ring-shaped. WGM mode microcavities can be fabricated from a variety of materials, including both solid and liquid forms. Due to its simple structure and smooth inner surface, its Q value is extremely high, usually higher than 10 ...

Claims

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Application Information

Patent Timeline
17 May 2019
Publication
CN109768465A
IPC
H01S3/16; H01S3/17
Inventors
王鹏飞; 赵海燕