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Infrared nonlinear optical crystal and preparation method and application thereof

A nonlinear optics and crystal technology, applied in nonlinear optics, chemical instruments and methods, optics, etc., can solve the problems of limitation and low laser damage threshold

Active Publication Date: 2017-08-08
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, AgGaQ 2 The small energy gap of (Q=S,Se) results in a low laser damage threshold, which limits its practical application

Method used

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  • Infrared nonlinear optical crystal and preparation method and application thereof
  • Infrared nonlinear optical crystal and preparation method and application thereof
  • Infrared nonlinear optical crystal and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The raw materials barium sulfide, zinc sulfide and gallium sulfide are ground and mixed uniformly in a molar ratio of barium sulfide: zinc sulfide: gallium sulfide=18:21:3 to obtain a raw material mixture, which is then tableted, and the raw material mixture after tableting is placed in graphite in the crucible.

[0051] The graphite crucible containing the raw material mixture was placed in a quartz reaction tube, and the vacuum was pumped to 10 -3 Pa, and use a hydrogen-oxygen flame to melt and seal the quartz reaction tube. Put the sealed quartz reaction tube into a tube furnace with a temperature controller, heat it to 850° C. (ie solid solution temperature), and keep it for at least 100 hours. Then the temperature is programmatically lowered to 300° C. at a rate of no more than 5° C. / hour, then the heating is stopped, and it is naturally cooled to room temperature to obtain the pure-phase microcrystalline powder of the nonlinear optical crystal material.

[0052]...

Embodiment 2-7

[0069] Examples 2-7 adopt the same preparation method as that of Example 1, except that the compounds shown in Table 3 are used as raw materials. The prepared crystal has the same Ba in Example 1 after detection 18 Zn 21 Ga 6 S 48 Crystals have the same or similar structural and optical properties.

[0070] Table 3. Raw materials for Examples 2-7

[0071] AM XM Y 2 m 3

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Abstract

The invention discloses an infrared nonlinear optical crystal and a preparation method and application thereof. The infrared nonlinear optical crystal has a molecular formula shown as A18X21Y6M48, wherein A is Ba, Sr or Pb; X is Zn, Cd or Mn; Y is Ga, In or Al; and M is S, Se or Te. The crystal belongs to a trigonal crystal system, and the space group is R3. Crystal Ba18Zn21Ga6S48 is a type-I phase matching nonlinear optical material, the particle size is in a range of 150-210 mu m, the frequency multiplication intensity and the laser-induced damage threshold of the powder are respectively 0.5 time and 28 times of that of commercial material AgGaS2, others crystals have a same or similar crystal structure and optical and other properties, have important military and civil application prospects, and can be used for optoelectrionic countermeasures, resource probing, space anti missile, communication and the like.

Description

technical field [0001] The invention relates to an infrared nonlinear optical crystal and its preparation method and application, belonging to the technical field of inorganic nonlinear optical materials. Background technique [0002] Nonlinear optical crystals are crystals that exhibit secondary and above nonlinear optical effects for strong laser electric fields. The nonlinear optical effect comes from the interaction between the laser and the medium. When the laser propagates in the medium with non-zero second-order polarizability, nonlinear optical effects will occur, such as difference frequency, sum frequency, laser frequency doubling and Parameter oscillation and amplification etc. It can be used for laser frequency conversion, extending the tunable range of lasers, modulating the intensity and phase of lasers, realizing holographic storage of laser signals, eliminating self-pumping phase conjugation of wavefront domain changes, etc. Nonlinear optical crystals have ...

Claims

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Application Information

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IPC IPC(8): C30B29/46C30B1/10G02F1/355
CPCC30B1/10C30B29/46G02F1/3551
Inventor 陈玲黎艳艳吴立明
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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