Crystal Growth and Terahertz Generation of Organic DAST Crystal with Large (001) Surface Area

Abstract

Abstract: The growth of DAST (4-N,N-dimethylamino-4,-N,-methylstilbazolium tosylate) crystal with large (001) surface area is challenging but necessary for intense broadband Terahertz (THz) sources.Here,the effect of the growth solution concentration on the crystal shape were studied by slope nucleation method-coupled slow cooling(SNM-SC) technique.With careful control over the growth conditions,DAST crystals with large (001) surface area were harvested.Surface morphology shows good surface quality.Without further surface polishing,this allowed to generate single cycle THz pulses with high optical-to-THz conversion efficiency reaching 0.66;.

Key words: The growth of DAST (4-N,N-dimethylamino-4,-N,-methylstilbazolium tosylate) crystal with large (001) surface area is challenging but necessary for intense broadband Terahertz (THz) sources.Here,the effect of the growth solution concentration on the crystal shape were studied by slope nucleation method-coupled slow cooling(SNM-SC) technique.With careful control over the growth conditions,DAST crystals with large (001) surface area were harvested.Surface morphology shows good surface quality.Without further surface polishing,this allowed to generate single cycle THz pulses with high optical-to-THz conversion efficiency reaching 0.66;.

CLC Number:

YOU Fei;SUN Qing;WANG Tianhua;CAO Lifeng;ZHONG Degao;TENG Bing. Crystal Growth and Terahertz Generation of Organic DAST Crystal with Large (001) Surface Area[J]. Journal of Synthetic Crystals, 2020, 49(3): 402-406.

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Crystal Growth and Terahertz Generation of Organic DAST Crystal with Large (001) Surface Area

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