Femtosecond continuum generation in bulk laser host materials with sub-μJ pump pulses

被引：236

作者：

Bradler, M. ^{[1
]}

Baum, P. ^{[1
]}

Riedle, E. ^{[1
]}

机构：

[1] Univ Munich, Lehrstuhl BioMol Opt, D-80538 Munich, Germany

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 2009年 / 97卷 / 03期

基金：

奥地利科学基金会;

关键词：

WHITE-LIGHT CONTINUUM; OPTICAL PARAMETRIC-AMPLIFIERS; SAPPHIRE REGENERATIVE AMPLIFIER; NONLINEAR REFRACTIVE-INDEX; NORMALLY DISPERSIVE MEDIA; SELF-PHASE MODULATION; 10 FS PULSES; SUPERCONTINUUM GENERATION; TRANSPARENT MEDIA; RAMAN-SCATTERING;

D O I：

10.1007/s00340-009-3699-1

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report a comprehensive investigation of femtosecond continuum generation in single crystals of several common laser host materials. The absolute spectral energy density, pulse-to-pulse stability, pump threshold, and beam profile are studied in dependence on the focusing conditions, crystal thickness, pump pulse energy, and pump wavelength (775-1600 nm). Continuum generation is shown at repetition rates of up to 80 MHz and for pump pulse durations of up to 350 fs. In yttrium aluminum garnet (YAG), yttrium vanadate (YVO4), gadolinium vanadate (GdVO4), and potassium-gadolinium tungstate (KGW) thresholds below 50 nJ, plateau-like visible and infrared spectra, and higher infrared photon flux as compared to conventional materials like sapphire are found. We discuss the particular advantages of these materials for application in parametric amplification, femtosecond spectroscopy, and carrier-envelope phase stabilization.

引用

页码：561 / 574

页数：14

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