Effect of extreme pump pulse reshaping on intense terahertz emission in lithium niobate at multimilliJoule pump energies

被引：56

作者：

Blanchard, F. ^{[1
]}

Ropagnol, X. ^{[2
]}

Hafez, H. ^{[2
]}

Razavipour, H. ^{[1
]}

Bolduc, M. ^{[3
]}

Morandotti, R. ^{[2
]}

Ozaki, T. ^{[2
]}

Cooke, D. G. ^{[1
]}

机构：

[1] McGill Univ, Dept Phys, Quebec City, PQ H3A 2TB, Canada

[2] Inst Natl Rech Sci INRS EMT, Varennes, PQ J3X 1S2, Canada

[3] INO Quebec, Quebec City, PQ G1P 4S4, Canada

来源：

OPTICS LETTERS | 2014年 / 39卷 / 15期

基金：

加拿大自然科学与工程研究理事会;

关键词：

OPTICAL RECTIFICATION; THZ PULSES; GENERATION; LINBO3;

D O I：

10.1364/OL.39.004333

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on terahertz (THz) generation via optical rectification in a room-temperature lithium niobate crystal under variable pump pulse durations, ranging from 100 to 300 fs, at 800 nm center wavelength. The efficiency for the process is predicted to have an order of magnitude increase when longer duration Fourier-limited pump pulses are used. Our results confirm this increase in efficiency, and we report a record 800 nm pump energy conversion efficiency of 0.35% with a saturation at >240 fs pulse duration. While promising, our findings show a series of key problems that must be overcome before the theoretical limit can be achieved, including the influence of the pump bandwidth broadening due to the cascaded nonlinearity taking place within the crystal. (C) 2014 Optical Society of America

引用

页码：4333 / 4336

页数：4

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