Femtosecond infrared pulses tunable from 9 to 18 μm at an 88-MHz repetition rate

被引：87

作者：

Kaindl, RA ^{[1
]}

Smith, DC

Joschko, M

Hasselbeck, MP

Woerner, M

Elsaesser, T

机构：

[1] Max Born Inst Nichtlineare Opt & Kurzzeitspektros, D-12489 Berlin, Germany

[2] Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England

来源：

OPTICS LETTERS | 1998年 / 23卷 / 11期

关键词：

D O I：

10.1364/OL.23.000861

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Femtosecond mid-infrared laser pulses that are continuously tunable in the wavelength range from 9 to 18 mu m are demonstrated. These nearly bandwidth-limited pulses are generated by phase-matched difference-frequency mixing within the broad spectrum of 20-fs pulses from a mode-locked Ti:sapphire laser in GaSe. A direct determination of the pulse duration at 11.5 mu m gives a value of 140 fs. The average mid-infrared power of 1 mu W is similar to 100 times greater than that for infrared generation by non-phase-matched optical rectification. (C) 1998 Optical Society of America.

引用

页码：861 / 863

页数：3

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