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A Ring Oscillator Capable of Obtaining High Repetition Frequency Injection-Locked Single-Frequency Pulses

A ring oscillator and injection locking technology, which is applied to lasers, phonon exciters, laser components, etc., to achieve the effect of increased scanning frequency, high repetition rate, and real-time measurement

Active Publication Date: 2019-12-13
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the scanning frequency of piezoelectric ceramics in the prior art is difficult to meet the requirements of making the laser repetition rate higher, so it is necessary to provide a ring oscillator that can obtain high repetition rate injection-locked single-frequency pulses

Method used

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  • A Ring Oscillator Capable of Obtaining High Repetition Frequency Injection-Locked Single-Frequency Pulses
  • A Ring Oscillator Capable of Obtaining High Repetition Frequency Injection-Locked Single-Frequency Pulses

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Embodiment 1

[0023] see figure 1 , which is a schematic structural diagram of a ring oscillator capable of obtaining a high repetition rate injection-locked single-frequency pulse provided by an embodiment of the present application.

[0024] A ring oscillator capable of obtaining high repetition rate injection-locked single-frequency pulses, including a master laser module, a slave laser module, and an injection-locked servo module;

[0025] The slave laser module includes an output mirror 5, a pump unit, and a first total reflection mirror 7 and a second total reflection mirror 9 placed oppositely; the injection locking servo module includes a piezoelectric ceramic 8 and an electrical control system 16; the The first total reflection mirror 7 is fixed on the piezoelectric ceramic 8;

[0026] Described master laser module sends seed laser; Described seed laser is incident on described first total reflection mirror 7 by described output mirror 5, and first total reflection mirror 7 reflec...

Embodiment 2

[0035] Based on the first embodiment, this embodiment of the present application provides another ring oscillator capable of obtaining a high repetition rate injection-locked single-frequency pulse. see figure 2 , which is a schematic structural diagram of another ring oscillator capable of obtaining high repetition rate injection-locked single-frequency pulses provided by the embodiment of the present application.

[0036] The master laser module includes a single-frequency narrow-linewidth laser 1, an optical isolator 3, a half-wave plate 4, and a first conversion lens 2; the slave laser module also includes an acousto-optic Q switch 6; the pump The unit includes a third total reflection mirror 10, a gain medium 11, a fourth total reflection mirror 12, a second transformation lens 13, and a pump source 14; the injection-locked servo module also includes a resonance signal detector 15;

[0037]The seed laser light emitted by the single-frequency narrow-linewidth laser 1 is ...

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Abstract

The invention provides a ring oscillator capable of acquiring high repetition rate injection locked single frequency pulse. Seed laser and oscillating laser in a ring oscillator pass twice through a first full mirror fixed on piezoelectric ceramic. Compared with the fact that the seed laser and the oscillating laser pass through the first full mirror fixed on the piezoelectric ceramic only once, the ring oscillator has the advantages that when optical paths of the same length are adjusted, the telescopic distance of the piezoelectric ceramic can be reduced by half; voltage meeting the movementrange of the piezoelectric ceramic is reduced; the scanning frequency of the piezoelectric ceramic is improved, and the scanning time of the piezoelectric ceramic is accelerated; and the ring oscillator can acquire laser output with higher repetition rate.

Description

technical field [0001] The invention belongs to the technical field of laser equipment, and in particular relates to a ring oscillator capable of obtaining high repetition frequency injection-locked single-frequency pulses. Background technique [0002] In the application of coherent wind lidar, increasing the repetition frequency of laser pulses can reduce the time for the radar to scan the field of view, improve the measurement accuracy of the radar, and make it possible to measure the wind speed in real time. The injection-locked single-frequency pulse laser can be used as the laser light source of the above-mentioned lidar. During the injection locking process, the repetition rate of the single-frequency pulse laser is related to the scanning time of one cycle of the piezoelectric ceramic. The faster the scanning time and the higher the scanning frequency, the higher the repetition rate that the laser can obtain after injection locking. [0003] However, the scanning fr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/083
CPCH01S3/083
Inventor 高春清张濛张艺轩
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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