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Laser output method without spectrum limitation

An output method and laser technology, applied in the field of laser, can solve the problems of light pulse width limitation, etc., and achieve the effect of reducing production cost, simple method, and convenient operation

Inactive Publication Date: 2003-02-05
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If the bandwidth of the output coupler is limited by the optical film, the possible optical pulse width is also limited

Method used

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  • Laser output method without spectrum limitation
  • Laser output method without spectrum limitation

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Embodiment Construction

[0007] The implementation of the technical solution of the present invention is illustrated below in conjunction with the accompanying drawings.

[0008] Take an optical flat glass with a thickness of 0.5mm as the output coupling mirror substrate. Ordinary optical glass is selected as the substrate material in the spectral range, and germanium or silicon glass is selected as the substrate material in the far-infrared spectral range; the thickness of the substrate is not strictly required, as long as it does not exceed four millimeters, it can be used. The optical anti-reflection film is vapor-deposited on one side of the substrate sheet to make the transmittance ≥ 99.9%, which can be accomplished in the prior art. Change the output coupling mirror at the original end of the laser resonator into a broadband total reflection mirror, put the output coupling mirror prepared above into the mechanical adjustment frame and insert it into the laser cavity. The insertion position of th...

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Abstract

A laser output method without spectrum limitation is suitable for coupled output of various laser devices. An output coupling lens plated with reflection reducing film on one surface is inserted in laser cavity and its interface reflection of unplated surface is used for coupled output to increase the output spectrum range to maximum. In whole oscillasion bandwidth range, there is a stable output. The semi-height width ratio of output spectrum is increased by more than one time. Its advantages are simple method, convenient operation and low cost.

Description

technical field [0001] The invention is an improvement of a laser output device and a method, and belongs to the technical field of lasers. Background technique [0002] The laser resonator of the laser is composed of a gain medium, a laser total reflection mirror and an output coupling mirror. In wide-tunable lasers and mode-locked lasers with optical pulse widths of several femtoseconds, the output coupling mirror is required to have a wide spectral bandwidth and a consistent output transmittance within this bandwidth. However, the current coating technology is still difficult to achieve a consistent output transmittance within a wide range of bandwidth. This limits the tunable range and output power stability of tunable lasers to some extent. The Fourier transformed optical pulse output in the femtosecond laser should satisfy ΔV·Δt=constant (where ΔV is the spectral bandwidth, and Δt is the optical pulse width). It can be seen that the smaller Δt is, the larger ΔV is, ...

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Application Information

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IPC IPC(8): H01S3/08
Inventor 陈国夫赵尚弘王屹山
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI