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High energy coherent bandwidth continuous spectrum generating apparatus

A high-energy, spectroscopic device technology, applied in optics, lasers, nonlinear optics, etc., can solve the problems of reduced stability, long overall device, and occupied space, and achieve the effects of increasing stability, improving efficiency, and reducing device size

Inactive Publication Date: 2019-02-01
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The overall unit is very long, which not only takes up a lot of space, but also reduces its stability due to airflow disturbances and vibrations

Method used

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  • High energy coherent bandwidth continuous spectrum generating apparatus
  • High energy coherent bandwidth continuous spectrum generating apparatus
  • High energy coherent bandwidth continuous spectrum generating apparatus

Examples

Experimental program
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Embodiment 1

[0027] Embodiment 1: adopt figure 1 and image 3 a structure.

[0028] The central wavelength of the incident laser pulse is 800 nanometers, and the spectral width is about 10 nanometers, such as Figure 4 As shown in (b), the corresponding Fourier transform limit pulse width is about 120 femtoseconds, and the polarization state is linear polarization in the horizontal direction. In the experiment, the grating compressor in the laser is directly adjusted to realize short pulse input. The short pulse light introduces a proper amount of dispersion through the grating compressor 1, and then passes through the polarizing beam splitter 2-1. The polarizing beam splitter can transmit horizontal linearly polarized light and reflect vertical linearly polarized light, and its supported bandwidth is 620-1000 nm. The negative dispersion introduced by the grating compressor 1 partially compensates the positive dispersion introduced by the polarizing beam splitter 2-1. After compensatio...

Embodiment 2

[0029] Embodiment 2: adopt figure 1 and image 3 bStructure.

[0030] The central wavelength of the incident laser pulse is 800 nanometers, and the spectral width is about 30 nanometers, such as Figure 4 As shown in (a), the corresponding Fourier transform limit pulse width is about 40 femtoseconds, and the polarization state is linear polarization in the horizontal direction. In the experiment, the grating compressor in the laser is directly adjusted to realize short pulse input. The short pulse light introduces an appropriate amount of dispersion through the grating compressor 1, and then passes through the polarizing beam splitter 2-1 and the first dichroic mirror 2-2. The polarizing beam splitter can transmit horizontal linearly polarized light and reflect vertical linearly polarized light, and its supported bandwidth is 620-1000 nm. The first dichroic mirror 2-2 can transmit the light of 650-1200 nanometers and reflect the light of 350-650 nanometers. The negative di...

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Abstract

The invention relates to a high energy coherent bandwidth continuous spectrum generating apparatus. The apparatus is composed of a first dispersion compensating apparatus, a light splitting apparatus,a spectrum broadening apparatus, a second dispersion compensating apparatus, a quarter-wave plate and a broadband mirror along an incident laser pulse propagation path. According to the high energy coherent bandwidth continuous spectrum generating apparatus, a common femtosecond, even picosecond laser spectrum can be widely spread. An applicable spectral range covers from deep ultraviolet to farinfrared bands, with great flexibility. The invention is applicable to higher pulse energy and incident light source with high average power.

Description

technical field [0001] The invention relates to ultrafast laser technology, in particular to a device for generating high-energy coherent broadband continuous spectrum. Background technique [0002] Coherent broadband continuous spectroscopy has a wide range of applications. For example, in high-precision laser technology, it can be used to realize frequency clocks, phase stabilization, frequency combs, etc.; in pump-probe research, it can be used to measure the properties of materials through absorption spectroscopy. If the coherent broadband continuous spectrum is compressed in the time domain, a pulse with extremely short width can be obtained, which can be used to detect -12 seconds) to attoseconds (10 -18 seconds) to study the microscopic dynamic behavior of matter. The study of generating coherent broadband continuous spectra has been a widely studied field in the past few decades, and with the continuous development of laser technology, new research results are cons...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/35H01S3/00
CPCG02F1/35G02F1/353H01S3/005H01S3/0092
Inventor 王丁赵睿睿乔玲玲赵钰陈逸飞黄志远冷雨欣
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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