Demodulating method for realizing laser intracavity frequency doubling light and laser structure thereof

A technology of intracavity frequency doubling and modulation method, which is applied in the laser field, can solve the problems of limited modulating frequency range, loss of laser energy, difficulty in large-scale productization, etc., achieve simple and convenient wide frequency range adjustment, and overcome the limitation of modulation range Effect

Inactive Publication Date: 2010-02-03
SHANGHAI BRANCH FUZHOU GAOYI COMM CO LTD
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Since it takes a certain amount of time to establish laser oscillation, its modulating frequency range is very limited; another method is to use extracavity acousto-optic modulation, but it is bulky, costly, and loses at least half of the laser energy, and is difficult to use. mass production

Method used

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  • Demodulating method for realizing laser intracavity frequency doubling light and laser structure thereof
  • Demodulating method for realizing laser intracavity frequency doubling light and laser structure thereof
  • Demodulating method for realizing laser intracavity frequency doubling light and laser structure thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Referring to shown in Fig. 1 (a), the pumping light of semiconductor laser pumping source 101 enters the resonator that pump is made up of resonator mirror 103 and 104 through optical coupling system 102, is provided with laser gain medium 105 in the resonator, to A fine-tuning system for fundamental wave light loss and a frequency doubling crystal 106.

[0032] The fine-tuning system is an electro-optic crystal 1081 with electrode plates 10911 and 10912 on the upper and lower sides of the non-optical surface, and the electro-optic crystal 1081 is modulated by adjusting the voltage of the electrode plates 10911 and 10912. The electro-optic crystal 1081 is set on the polarizer Between the device 1071 and the analyzer 1072. The electro-optic crystal 1081 can be LN crystal, BBO crystal, KTP crystal. The length of the electro-optic crystal 1081 in the light-passing direction is L, the height is d, and voltage is applied on both sides of the light-passing section. Since th...

Embodiment 2

[0036] Referring to shown in Fig. 1 (b), the pumping light of semiconductor laser pumping source 101 enters the resonator that pump is made up of resonator mirror 103 and 104 through optical coupling system 102, is provided with laser gain medium 105 in the resonator, to A fine-tuning system for fundamental wave light loss and a frequency doubling crystal 106.

[0037] The fine-tuning system is that an electromagnetic field 1092 is applied around the non-transmissive surface of a magneto-optic crystal 1082, and the magneto-optic crystal 1082 is modulated by adjusting the magnetic field of the electromagnetic field 1092. The magneto-optic crystal 1082 is arranged on the polarizer 1071 and the detector. Between polarizers (1072). Since the required rotation angle is small, the applied magnetic field strength can be small or the required crystal length can be relatively large. For some magneto-optical materials, especially materials with a light-transmitting wavelength range of ...

Embodiment 3

[0039]Referring to shown in Fig. 1 (c), the pumping light of semiconductor laser pumping source 101 enters the resonator that pump is made up of resonator mirror 103 and 104 through optical coupling system 102, is provided with laser gain medium 105 in the resonator, to A fine-tuning system for fundamental wave light loss and a frequency doubling crystal 106. The fine-tuning system is adjustable etalon 1083 .

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Abstract

The invention relates to the laser field, in particular to an intracavity frequency doubling laser. The invention includes that a modulator which can adjust fundamental wave light loss in high speed and small amplitude, such as a modulator made by adopting electro optical effect, magneto optic effect, piezoelectric effect or etalon effect, is added into the intracavity frequency doubling laser ofa continuous pump. The characteristic that intracavity frequency doubling laser output power is highly sensitive to intracavity fundamental wave light loss is utilized to realize high speed modulationof frequency doubling laser output power. The invention is especially applicable to high speed modulation of various laser sources in laser display. The invention utilizes new modulation theory and the characteristic that intracavity frequency doubling laser output power is highly sensitive to intracavity fundamental wave light loss to realize high speed modulation of frequency doubling laser output power. The defects of the prior art that modulation range is limited and structure is relatively complex are overcome, and wide frequency range regulation from low frequency to high frequency of the intracavity frequency doubling output light can be realized simply and conveniently.

Description

technical field [0001] The invention relates to the laser field, in particular to an intracavity frequency doubling laser. Background technique [0002] In the field of laser display, semiconductor-pumped intracavity frequency-doubled laser is the main way to obtain laser light source, especially for green light source. A common modulation method of laser output power is to directly adjust the pump power of the pump source, and its modulation frequency is generally a few KHZ. Since it takes a certain amount of time to establish laser oscillation, its modulating frequency range is very limited; another method is to use extracavity acousto-optic modulation, but it is bulky, costly, and loses at least half of the laser energy, and is difficult to use. mass production. Contents of the invention [0003] However, the present invention utilizes the inherent characteristics of intracavity frequency doubling lasers to propose a new modulation method, thereby realizing the wide f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/10H01S3/0941
Inventor 吴砺凌吉武孙朝阳陈燕平马英俊任策
Owner SHANGHAI BRANCH FUZHOU GAOYI COMM CO LTD
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