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A full-band tunable highly integrated femtosecond pulse compression device

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

Inactive Publication Date: 2015-10-21
SUN YAT SEN UNIV
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  • Abstract
  • Description
  • Claims
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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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  • A full-band tunable highly integrated femtosecond pulse compression device

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Embodiment Construction

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

[0022] Such as figure 1 As shown, the present invention discloses a full-band adjustable highly integrated femtosecond pulse compression device, which includes a liquid crystal cell 2, a 1 / 4 wave plate 1 located on one side of the light incident direction of the liquid crystal cell 2, and a light output device located at 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 parallel glass or quartz 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 is located at one of the edges of the band gap formed by the helical liquid crystal, and the edge is a long wave edge or a short wave edge, and the bandwidth i...

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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 helical liquid crystals and the compression of ultrashort laser pulses, and specifically relates to a full-band adjustable high-integration femtosecond pulse compression device. Background technique [0002] After liquid crystals (Liquid Crystals, LCs) were invented in nature, they have attracted worldwide attention due to their natural self-organization and other characteristics. Especially with the development of chemical synthesis and other industrial technologies, the preparation of liquid crystals and its applications in display and sensing have also developed rapidly. At present, the display market is basically occupied by devices based on liquid crystals. In addition, liquid crystal is a natural periodic structure, and its period is comparable to the wavelength of light, and its structure can be modulated by external fields such as temperature and electromagneti...

Claims

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Application Information

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Patent Type & Authority Patents(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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