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Tunable liquid microsphere laser

A laser and microsphere technology, applied in the field of lasers, can solve the problems such as the lack of breakthrough progress in liquid microsphere lasers, the inaccuracy of macroscopic mechanical vibration, and the difficulty in realizing laser output, and achieve low-loss connection, high Q value, excitation The effect of low energy requirements

Active Publication Date: 2015-10-21
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the macroscopic mechanical vibration is not accurate, the droplet has great instability, and it is difficult to achieve a stable laser output.
It is precisely because of the instability of liquid droplets that liquid microsphere lasers have not made breakthroughs in the past for a long time

Method used

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  • Tunable liquid microsphere laser

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specific Embodiment 1

[0026] Specific embodiment 1, the realization of a liquid microsphere laser, and the light intensity and phase of the output laser are tuned.

[0027] Proceed as follows:

[0028] 1. Optical system construction:

[0029] ①Select two lasers with a wavelength of 980 nm as the capture light source, weld the output ends of the first capture light source 1 and the second capture light source 2 to the first isolator 4 and the second isolator 5, and weld the output ends of the isolators A section of standard single-mode optical fiber, the tail end of the single-mode optical fiber is about 30 mm removed from the coating layer and cut flat to form the end of the first capturing optical fiber 7a and the end of the second capturing optical fiber 7b, realizing a set of dual-fiber optical tweezers;

[0030] ②Choose a laser with a central wavelength of 532 nm as the pumping light source 3, weld the output end of the pumping light source 3 to the third isolator 6, weld a section of standard...

specific Embodiment 2

[0041] Specific embodiment 2, the realization of a liquid microsphere laser, and the wavelength of the output laser is selected.

[0042] Proceed as follows:

[0043] 1. Optical system construction:

[0044] ①Select two lasers with a wavelength of 980 nm as the capture light source, weld the output ends of the first capture light source 1 and the second capture light source 2 to the first isolator 4 and the second isolator 5, and weld the output ends of the isolators A section of standard single-mode optical fiber, the tail end of the single-mode optical fiber is about 30 mm removed from the coating layer and cut flat to form the end of the first capturing optical fiber 7a and the end of the second capturing optical fiber 7b, realizing a set of dual-fiber optical tweezers;

[0045] ②Choose a laser with a central wavelength of 532 nanometers as the pumping light source 3, weld the output end of the pumping light source 3 to the third isolator (6), weld the output end of the is...

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Abstract

The invention provides a tunable liquid microsphere laser. A first capturing light source (1), a second capturing light source (2) and a pump light source (3) are connected to an excitation control part (7) through isolators. The excitation control part (7) is connected to a photodetector (9) through a 1*2 coupler (8). Another port of the 1*2 coupler (8) is a laser output port. The excitation control part (7) includes a first capturing fiber (7a), a second capturing fiber (7b), a pump light input fiber (7c), a laser output fiber (7d) and a liquid microsphere (7e). The liquid sphere is disposed between the pump light input fiber and the laser output fiber. The liquid microsphere includes active laser medium and is disposed in external transparent liquid medium (7f). According to the invention, by adopting fiber optical trap technology, the optical resonance principle and the laser principle, the tunable liquid microsphere laser is provided and has advantages of being high in stability, easy to operate, high in Q value, low in threshold value and the like.

Description

technical field [0001] The invention relates to a laser, in particular to a tunable liquid microsphere laser with stable output. Background technique [0002] Microsphere laser is a microcavity laser based on Whispering Gallery Modem (WGM). WGM has the characteristics of long coherence length, narrow spectral linewidth, low threshold, high conversion efficiency, high-speed modulation, etc. The microsphere laser based on WGM has a very high quality factor (Q value), extremely small mode volume and very wide frequency band coverage. As early as 1961, C.G.B.Garrett and others incorporated divalent Sm ions into CaF 2 In the crystal, it was ground into a spherical shape with a diameter of 1 to 2 mm. Under the excitation of a flash lamp, stimulated emission of light was observed. This is the earliest microsphere laser. Later, with the development of coupling theory and the production of various coupling devices, spherical microcavities have been extensively researched and devel...

Claims

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Application Information

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IPC IPC(8): H01S3/20H01S3/10
Inventor 赵恩铭陈云浩刘志海张羽张亚勋苑立波
Owner HARBIN ENG UNIV
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