Growth, transmission, Raman spectrum and THz generation of DAST crystal

被引：16

作者：

Cao, Lifeng ^{[1
,2
]}

Teng, Bing ^{[1
,2
]}

Xu, Degang ^{[3
,4
]}

Zhao, Huaisong ^{[1
,2
]}

Hao, Lun ^{[1
,2
]}

Yao, Jianquan ^{[3
,4
]}

Guo, Jianqin ^{[3
,4
]}

机构：

[1] Qingdao Univ, Coll Phys, Qingdao 266071, Peoples R China

[2] Qingdao Univ, Key Lab Photon Mat & Technol Univ Shandong, Qingdao 266071, Peoples R China

[3] Tianjin Univ, Coll Precis Instruments & Optoelect Engn, Tianjin 300072, Peoples R China

[4] Tianjin Univ, Minist Educ, Key Lab Optoelect Informat Technol, Tianjin 300072, Peoples R China

来源：

RSC ADVANCES | 2016年 / 6卷 / 103期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

NUCLEATION;

D O I：

10.1039/c6ra15393c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The organic crystal 4-N, N-dimethylamino-4-N-methyl stilbazolium tosylate (DAST) was obtained by seed crystal method. We measured a maximum optical transmittance of 81%. Difference frequency generation (DFG) with reflecting double-pass optical parametric oscillator (OPO) was applied to generate terahertz (THz) wave. Tunable THz waves in the broad range of 0.51-19.69 THz were achieved. The maximum pulse energy was 267.7 nJ at 4.11 THz, and the laser-to-THz conversion efficiency of 1.04 x 10(-4) was obtained. Raman spectrum measurement also indicates the consistence of the Raman modes and the THz tuning curve from DAST crystal. The theoretical THz transmittance values are calculated and compared with the measured values. The variation tendency of the measured transmittance with THz frequency is found to be in agreement with that of the theoretical ones.

引用

页码：101389 / 101394

页数：6