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Method and apparatus for measuring terahentz pulse sequence using chirp pulse spectrum

A technology of terahertz pulse and chirped pulse, applied in the direction of instruments, etc., can solve the problems such as the detection speed is not significantly improved, the single-channel information density is not fully utilized, and the development of optical signal detection methods is slow.

Inactive Publication Date: 2006-10-25
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

The methods to solve the signal transmission speed between the two places mainly include increasing the logarithm of optical fiber, wavelength division multiplexing, etc., but the information density that can be accommodated by a single channel is still not fully utilized. One of the reasons is that the development of optical signal detection methods is slow and the detection speed is slow. no significant improvement

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  • Method and apparatus for measuring terahentz pulse sequence using chirp pulse spectrum
  • Method and apparatus for measuring terahentz pulse sequence using chirp pulse spectrum
  • Method and apparatus for measuring terahentz pulse sequence using chirp pulse spectrum

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Embodiment Construction

[0049] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but the protection scope of the present invention should not be limited.

[0050] see first figure 1, Figure 1 is Schematic diagram of the structure of the chirped pulse THz pulse sequence measurement setup of the present invention. It can be seen from the figure that the device for measuring the terahertz pulse sequence using the chirped pulse spectrum of the present invention includes an ultrashort pulse light 1, and a first beam splitter 2 and a grating pair 3 are arranged in the advancing direction of the ultrashort pulse light 1. The ultrashort pulse light 1 is broadened into a linear chirped pulse light by the grating pair 3, and the direction of the reflected light of the chirped pulse light passing through the first beam splitter 2 is the polarizer 4 and the second beam splitter 6 in sequence, A high-speed optical pulse sequence 5 to be measur...

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Abstract

The invention relates to a method and device to measure hertzhz pulse sequence by using chatter pulse-frequency spectrum. It includes ultrashort pulse light, first beam splitting sheet and grating pair. The ultrashort pulse light is a linear clatter pulse-frequency light. The polarizer and the second beam splitting sheet are on the reflecting direction of the first beam splitting sheet. A tested high speed light pulse frequency transmitting from the other direction of the second beam splitting sheet and the front direction is the second beam splitting sheet, non-linear crystal, the third beam-splitting sheet, analyzer and the first CCD spectroscope, the reflecting direction of the third beam splitting sheet would enter into the second CCD spectroscope. The invention is simple structure and is convenience to adjust.

Description

technical field [0001] The present invention is a new type of high-frequency optical pulse sequence measurement, especially a method and device for measuring terahertz pulse sequence by using chirped pulse spectrum. Specifically, it uses chirped pulse laser with a wide spectrum as a probe, The method of detecting the rotation of the polarization direction can realize real-time sampling of an optical pulse sequence with a frequency up to Terahertz (THz for short). Background technique [0002] With the continuous development of network and communication services, the traffic of instant communication such as videophone and high-definition TV is increasing, and gigabytes of data are often required, and the requirements for signal transmission speed are increasing day by day. [1 J.McKinney, A.Weiner, D.Seo Ultrafast Electronics and Optoelectronics TOPS Volume 82 WB3-1] The importance and requirements of high-speed optical signal sampling continue to increase. The current data b...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J11/00
Inventor 杨明刘建胜
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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