REVIEW ON PARAMETRIC GENERATION OF TERAHERTZ WAVE: FROM MAXIMUM CONVERSION EFFICIENCY TO NEW ROUTE TO COMPACT AND PORTABLE SOURCES

被引：1

作者：

Ding, Yujie J. ^{[1
]}

Zhao, Pu ^{[1
]}

Ragam, Srinivasa ^{[1
]}

Li, Da ^{[1
]}

Zotova, Ioulia B. ^{[2
]}

机构：

[1] Lehigh Univ, Dept Elect & Comp Engn, Bethlehem, PA 18015 USA

[2] ArkLight, Center Valley, PA 18034 USA

来源：

JOURNAL OF NONLINEAR OPTICAL PHYSICS & MATERIALS | 2011年 / 20卷 / 03期

基金：

美国国家科学基金会;

关键词：

Terahertz generation; frequency mixing; dual-frequency solid-state lasers; DIFFERENCE-FREQUENCY-GENERATION; FEMTOSECOND OPTICAL PULSES; MU-M; RADIATION; SPECTROSCOPY; ABSORPTION; RANGES;

D O I：

10.1142/S0218863511006078

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We review the recent progress made by our group on power scaling of THz waves and the development of compact and portable THz sources. By reversely stacking GaP plates, we were able to improve the photon conversion efficiency from 25% to 40%, which is the record-high value. As the number of the stacked GaP plates was increased from 4 to 5, the output power was decreased. This is the evidence on back conversion. In order to make our THz source truly compact and portable, we investigated a new route to THz generation by mixing two frequencies generated by a single Nd:YLF solid-state laser. After two Nd: YLF crystals were introduced in the laser cavity, the output power was scaled up to 4.5 mu W. Such a configuration exhibits versatile characteristics such as the generation of different THz frequencies by combining two different laser crystals.

引用

页码：249 / 270

页数：22

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