Full-wave-band adjustable highly-integrated femtosecond pulse compressor part

A high-integration, femtosecond pulse technology, used in instruments, nonlinear optics, optics, etc., can solve the problems of difficult integration, complicated instruments, and large environmental impact, and achieve the effect of simplifying the device and improving the docking and integration performance.

Inactive Publication Date: 2013-09-04
SUN YAT SEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a simple structure, low cost, and easy to integrate full-band adjustable Highly integrated femtosecond pulse compression device

Method used

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  • Full-wave-band adjustable highly-integrated femtosecond pulse compressor part

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the drawings.

[0022] Such as figure 1 As shown, the present invention discloses a full-wavelength adjustable high-integration femtosecond pulse compression device, which includes a liquid crystal cell 2, a quarter wave plate 1 located on one side of the light incident direction of the liquid crystal cell 2, and a light output from the liquid crystal cell 2 The linear polarization converter 3 on one side of the direction, the liquid crystal cell 2 includes a box composed of two pieces of glass or quartz parallel to each other and a spiral liquid crystal arranged in the box. The rotation axis of the spiral liquid crystal is perpendicular to the box and is in contact with the box. The liquid crystal has a parallel orientation; the 1 / 4 wave plate 1 has a center wavelength at one of the edges of the band gap formed by the spiral liquid crystal, the edge is a long-wave edge or a short-wave edge, and the ...

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Abstract

The invention discloses a full-wave-band adjustable highly-integrated femtosecond pulse compressor part which comprises a liquid crystal box, a quarter of a wave plate and a linear polarization converter. The quarter of the wave plate is arranged on one side of an incident light direction of the liquid crystal box and the linear polarization converter is arranged on one side of an emitting light direction of the liquid crystal box. The liquid crystal box comprises a box which is composed of two parallel pieces of glass or two parallel pieces of quartz and spiral liquid crystals arranged in the box. Revolving shafts of the spiral liquid crystals are vertical to the box and crystals contacted with the box have parallel orientation. The central wavelength of the quarter of the wave plate is arranged on one of rims of band gaps which are formed by the spiral liquid crystals. The bandwidth of the quarter of the wave plate is wide enough to cover a wavelength range of the band edge. The linear polarization converter is an optical element which can convert circularly polarized light into linearly polarized light. The impulse compression technology is small, effective and free of loss, devices adopting the impulse compression technology in an optical network are realized, integration level of pulse lasers of the full-wave-band adjustable highly-integrated femtosecond pulse compressor part is improved and work performances based on impulse laser elements are improved.

Description

Technical field [0001] The invention relates to the technical fields of obtaining a specific arrangement of spiral liquid crystals and compression of ultra-short laser pulses, and in particular to a highly integrated femtosecond pulse compression device with adjustable full-wavelength bands. Background technique [0002] After the liquid crystals (Liquid Crystals, LCs) were invented in nature, they have attracted widespread attention from the world due to their natural self-organization and other characteristics. Especially with the development of industrial technologies such as chemical synthesis, the preparation of liquid crystals and their applications in display, sensing and other fields are also rapidly developing. At present, the display market is basically occupied by liquid crystal-based devices. In addition, the liquid crystal is a natural periodic structure, and its period is comparable to the wavelength of light, and its structure can be modulated with the help of exte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/35G02F1/1333
Inventor 周建英宋李烟付神贺刘忆琨
Owner SUN YAT SEN UNIV
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