Generation of sub-mJ terahertz pulses by optical rectification

被引：230

作者：

Fueloep, J. A. ^{[1
]}

Palfalvi, L. ^{[1
]}

Klingebiel, S. ^{[2
]}

Almasi, G. ^{[1
]}

Krausz, F. ^{[2
,3
]}

Karsch, S. ^{[2
,3
]}

Hebling, J. ^{[1
]}

机构：

[1] Univ Pecs, Dept Expt Phys, H-7624 Pecs, Hungary

[2] Max Planck Inst Quantum Opt, D-85748 Garching, Germany

[3] Univ Munich, Dept Phys, D-85748 Garching, Germany

来源：

OPTICS LETTERS | 2012年 / 37卷 / 04期

基金：

匈牙利科学研究基金会;

关键词：

LASER-PULSES;

D O I：

10.1364/OL.37.000557

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Recent theoretical calculations predicted an order-of-magnitude increase in the efficiency of terahertz pulse generation by optical rectification in lithium niobate when 500 fs long pump pulses are used, rather than the commonly used similar to 100 fs pulses. Even by using longer than optimal pump pulses of 1.3 ps duration, 2.5x higher THz pulse energy (125 mu J) was measured with 2.5x higher pump-to-THz energy conversion efficiency (0.25%) than reported previously with shorter pulses. These results verify the advantage of longer pump pulses and support the expectation that mJ-level THz pulses will be available by cooling the crystal and using large pumped area. (C) 2012 Optical Society of America

引用

页码：557 / 559

页数：3

共 20 条

[1] Terahertz generation with tilted-front laser pulses: dynamic theory for low-absorbing crystals [J].