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Frequency stabilizing device for numerical control feedback semiconductor laser

A frequency stabilization, laser technology, applied in semiconductor lasers, lasers, laser parts, etc., can solve the problem that the frequency of semiconductor lasers cannot be stabilized at any frequency

Inactive Publication Date: 2013-07-03
SHANXI UNIV
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the existing laser frequency stabilization technology cannot stabilize the laser frequency of the semiconductor laser at any frequency, the present invention provides a digitally controlled feedback semiconductor laser frequency stabilization device

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  • Frequency stabilizing device for numerical control feedback semiconductor laser
  • Frequency stabilizing device for numerical control feedback semiconductor laser

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Embodiment Construction

[0011] Digital control feedback semiconductor laser frequency stabilization device, including He-Ne laser 1, semiconductor laser 2, temperature controller 10, vacuum cavity 11, vacuum pump 12, first photodetector 14, second photodetector 15, NI data acquisition card 16, high-voltage amplifier 17, computer 18, and voltage divider 19; Wherein, be provided with by the first total reflection mirror 3, the second total reflection mirror 4 between the outgoing end of He-Ne laser device 1 and the first photodetector 14 , confocal Fabry-Perot cavities 7 are connected in series to form an optical path; between the outgoing end of the semiconductor laser 2 and the second photodetector 15, a third total reflection mirror 5 and a fourth total reflection mirror 6 are provided , confocal Fabry-Perot cavities 7 are sequentially connected in series to form an optical path; the cavities of the confocal Fabry-Perot cavities 7 are respectively equipped with a semiconductor refrigerator 8, a therm...

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Abstract

The invention relates to the laser frequency stabilization technique and particularly relates to a frequency stabilizing device for a numerical control feedback semiconductor laser. The frequency stabilizing device is used for solving the problem that the laser frequency of a semiconductor laser cannot be stabilized in optional frequency by the conventional laser frequency stabilization technique. The frequency stabilizing device for the numerical control feedback semiconductor laser comprises a He-Ne laser, a semiconductor laser, a temperature controller, a vacuum cavity, a vacuum pump, a first photoelectric detector, a second photoelectric detector, an N1 data acquisition card, a high voltage amplifier, a computer and a voltage divider, wherein a light path formed by sequentially connecting a first totally reflecting mirror, a second totally reflecting mirror and confocal Fabry-Perot cavities in series is arranged between the emitting end of the He-Ne laser and the first photoelectric detector. The frequency stabilizing device is suitable for the fields of optical communication, optical information reading and writing, laser spectroscopy and the like.

Description

technical field [0001] The invention relates to a laser frequency stabilization technology, in particular to a frequency stabilization device for a digitally controlled feedback semiconductor laser. Background technique [0002] Semiconductor lasers are widely used in optical communication, optical information reading and writing, and laser spectroscopy due to their advantages of small size, light weight, reliable operation, and low power consumption. However, semiconductor lasers have wide spectral lines and poor stability. Therefore, compared with other lasers (such as He-Ne lasers), the laser output from semiconductor lasers has poor coherence and poor stability, which seriously restricts the application of semiconductor lasers. In order to ensure that the semiconductor laser can be widely used, it is necessary to stabilize the laser frequency of the semiconductor laser. Under the existing technical conditions, laser frequency stabilization technology for semiconductor ...

Claims

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Application Information

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IPC IPC(8): H01S5/0687
Inventor 赵延霆肖连团贾锁堂
Owner SHANXI UNIV
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