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Terahertz source and application thereof

A terahertz and light source technology, applied in the field of terahertz waves, can solve the problems of limiting the practical application of terahertz sources, complex processes, and high prices, and achieve the effects of simple design, large wavelength tuning range, and low cost

Inactive Publication Date: 2020-08-07
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The above several terahertz sources have their own problems: expensive, bulky, complicated process, need to work at ultra-low temperature, etc., which seriously limit the practical application of terahertz sources. Working, small and portable THz source

Method used

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  • Terahertz source and application thereof
  • Terahertz source and application thereof
  • Terahertz source and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] see figure 1 , the terahertz source includes a seed light source 1 , a frequency modulation medium 3 , a focusing system 2 and a supporting cavity 5 . The seed light source 1 is connected to the optical path of the focusing system 2 , and the focusing system 2 is connected to the optical path of the frequency modulation medium 3 . The seed light source 1 , the frequency modulation medium 3 and the focusing system 2 are sequentially arranged and installed in the support cavity 5 along the optical axis. The light connected to the seed light source 1 , the focusing system 2 , and the frequency modulation medium 3 is transmitted through the channel provided in the support cavity 5 .

[0054] The seed light source 1 emits light with a wavelength of 6.67 μm, which acts on the diamond crystal after passing through the focusing system 3 . After inputting a 6.67μm light source, the output of the diamond Stokes Raman laser is realized, the output wavelength is 60μm, and the cor...

Embodiment 2

[0056] The difference from Embodiment 1 is that: the seed light source 1 emits light with a wavelength of 7 μm, which is focused on the diamond sample after passing through the focusing system 3 . After inputting a light source of 7 μm, the output of diamond Stokes Raman laser is realized, the output wavelength is 105 μm, and the corresponding frequency is 2.86 THz, which realizes the output of terahertz wave.

Embodiment 3

[0058] The difference from Embodiment 1 is that the light with a wavelength of 7.48 μm emitted by the seed light source 1 is focused on the diamond medium in the resonant cavity after passing through the focusing system 3 . After inputting a light source of 7.48μm, the output of diamond Stokes Raman laser is realized, the output wavelength is 2805μm, and the corresponding frequency is 0.1THz, which realizes the output of terahertz wave.

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Abstract

The invention discloses a terahertz source and application thereof. The terahertz source comprises a seed light source and a frequency modulation medium, wherein the seed light source generates seed light, the seed light enters the frequency modulation medium and then emits terahertz waves, the frequency modulation medium is a laser medium with Raman characteristic peaks, the frequency vout of theterahertz wave is equal to (c / [lambda]inp-c / [lambda]d) / 1, [lambda]d is equal to 1 / Raman characteristic peak position of the laser medium, [lambda]inp is the wavelength of the seed light, and the light speed c is 3.0*10<8> m / s. The terahertz source is small in size, few in parts, low in cost, capable of working at normal temperature and beneficial to improving application of terahertz waves in various fields, and obtains the terahertz waves based on light wave frequency conversion.

Description

technical field [0001] This application relates to a terahertz source and its application, belonging to the field of terahertz waves. Background technique [0002] Terahertz Waves (THz) waves, also known as T-rays, refer to electromagnetic waves with a frequency range of 0.1-10THz (1THz=1012Hz) and a wavelength of 2.805-0.03mm, which is quite wide between the microwave and infrared spectra. within the frequency range. In 2004, the U.S. government rated THz technology as the fourth of "Top Ten Technologies Changing the Future World". THz waves have the characteristics of strong penetrability, high safety in use, and good orientation, and have brought profound impacts on communications, radar, electronic countermeasures, electromagnetic weapons, astronomy, medical imaging, nondestructive testing, and security inspections. [0003] Due to the high frequency of the THz wave, its spatial resolution is also very high; and because its pulse is very short (picosecond level), it ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S1/02
CPCH01S1/02
Inventor 江南李赫易剑王博褚伍波
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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