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Circular cavity laser

A technology of lasers and cavity lasers, which is applied to lasers, laser parts, phonon exciters, etc., can solve the problems of low manufacturing precision, the lack of wide application of traveling wave systems, and the complexity of laser adjustment mechanisms, etc., to achieve convenient manufacturing Effect

Inactive Publication Date: 2009-02-11
SHANGHAI BRANCH FUZHOU GAOYI COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional traveling wave oscillator is usually an oscillator composed of a ring resonator with 3 or 4 mirrors and a one-way optical gate. Compared with the traditional standing wave oscillator, the ordinary traveling wave oscillator structure Complex and not widely used in traveling wave systems
However, the ring cavity laser is an effective structure for generating single longitudinal mode laser output. Most ring cavity structures use two or more cavity plates, which makes the laser adjustment mechanism of the ring cavity structure complex and poor in stability.
[0003] Patent No. ZL20052007674.5 proposes to use two right-angle prism optical materials to form a circular cavity structure through optical glue or deepening optical glue. This structure is mainly to strengthen the stability of the laser cavity and realize the adjustable wavelength. The output is still more complex
[0004] Chinese patent document CN200956491 discloses a ring cavity laser, the front wave plate, front work-off crystal, 1 / 2 wave plate, Faraday rotator, rear work-off crystal, rear wave plate and laser gain medium form a ring cavity, The outer end surface of the front wave plate is coated with the front cavity film layer, and the outer end surface of the rear wave plate is coated with the back cavity film layer. Due to the low manufacturing precision requirements of this structure, the performance of the laser is not stable enough.
[0005] The design flaws of ring cavity lasers have not been solved in the industry

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0021] Embodiment 1: Structure as shown in Figure 1a and Figure 1b, 101 is a semiconductor pump laser, 102 is an optical coupling system, 103A is a rectangular prism, 103B is another optical prism 103A, there is a PBS film between 103B, and 104 is a laser Gain medium, 105 is a Faraday rotator, 106 is a 1 / 2 wave plate, 107 is a frequency doubling crystal, 109 is a rectangular prism, 108 is a transition piece bonding 103A and 109.

[0022] PBS film is plated between 103A and 103B of the present invention, it transmits to the laser oscillation wavelength P component, and highly inverse or partial output to the laser oscillation wavelength S component, 105, 106 and 103A, 103B are Faraday rotators, 1 / 2 wave plate and The PBS prism constitutes a circular cavity unidirectional laser as a polarization selector.

[0023] The present invention uses two right-angle prisms to form a circular cavity, so that the cavity-free structure of the laser cavity is realized, and the PBS prism struc...

Embodiment 2

[0025] Embodiment 2: The structure is shown in Fig. 2a and Fig. 2b, 103, 109 are small-angle triangular optical prisms, 110 is a polarizing polarizer, and other structures are the same as in Embodiment 1. The annular cavity in the figure is of type The circular light path structure is characterized by the small acute angle of the two reflective triangular prisms, and the incident angle of light is smaller than the total internal reflection angle, so it is necessary to coat the surface of the prism with a reflective film to form the laser cavity oscillation, but at the same time, the pump light can also be directly from the cavity The other side of the chip is pumped, and the oscillating light can be directly output from the prism.

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Abstract

A ring-cavity laser belongs to the laser equipment manufacturing technical field. The invention adopts two or more prisms as the ring-cavity laser cavity mirrors; meanwhile, the prisms used as the cavity mirrors are attached to a transition connecting piece into a whole through an optical cement, a deepening optical cement or a glue; a laser gain medium, a wave plate and a Faraday rotary piece and a frequency doubling crystal are placed in a laser cavity, thereby achieving the purpose of outputting fundamental waves in a single longitudinal mode from a single-way ring cavity or forming a frequency double laser. Therefore, the laser is made more conveniently; meanwhile, by adopting an integral structure of a reflective cavity system, the cavity mirrors of the whole laser can be free from being adjusted, thereby providing an effective laser cavity structure for quickly and massively making and producing the ring-cavity laser.

Description

technical field [0001] The invention discloses a ring cavity laser, in particular two or more prisms are used as ring cavity laser cavity mirrors, and optical components are placed in the laser cavity to realize a one-way ring cavity single longitudinal mode output laser, which belongs to the laser equipment category field of manufacturing technology. Background technique [0002] The traditional traveling wave oscillator is usually an oscillator composed of a ring resonator with 3 or 4 mirrors and a one-way optical gate. Compared with the traditional standing wave oscillator, the ordinary traveling wave oscillator structure Complicated, it has not been widely used in traveling wave systems. However, ring cavity lasers are an effective structure for generating single longitudinal mode laser output. Most ring cavity structures use two or more cavity plates, which makes the laser adjustment mechanism of ring cavity structure complex and poor in stability. [0003] Patent No....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/083H01S3/098
Inventor 吴砺凌吉武彭永进王磊郭磊杨建阳陈卫民
Owner SHANGHAI BRANCH FUZHOU GAOYI COMM CO LTD