Self-Raman Nd-doped vanadate laser: a pump source of organic crystal based difference frequency generation. Issue 10 (6th June 2020)

• Record Type: Journal Article
• Authors: Liu, Pengxiang; Qi, Feng; Li, Weifan; Liu, Zhaoyang; Wang, Yelong; Ding, Xin; Yao, Jianquan
• Is Part Of: Journal of modern optics. Volume 67:Issue 10(2020)
• Page Start: 914
• Page End: 919
• Publication Date: 2020-06-06
• Subjects: Self-Raman laser -- rate equation -- difference frequency generation -- organic nonlinear crystal; Optics -- Periodicals; 535
• DOI: 10.1080/09500340.2020.1788188
• Languages: English
• ISSNs: 0950-0340

Abstract

Abstract : We analyse a method of high repetition rate, efficient terahertz wave difference frequency generation (DFG) by using a self-Raman Nd-doped vanadate laser to pump 4'-dimethylamino-N-methyl-4-stilbazolium tosylate (DAST). A semi-analytical model is introduced that combines the rate equations (for the self-Raman dual-wavelength laser) and the coupled-wave equations (for the DAST-based DFG). Calculations were performed on a diffusion-bonded Nd:YVO4 -YVO4 laser with an acousto-optic Q-switch. Parameters (including transmittances at output mirror and crystal lengths) were optimized to obtain high output. Sub-milliwatt average power is predicted under current pump condition.