SHBC-TOPAS
2Pages

Femtosecond Pumped Narrow Bandwidth Optical Parametric Amplifier System General description FEATURES Pulse bandwidth <10 cm¯¹ Continuously wavelength tunable in 240-2400 nm range High energy output (>400 μJ at peak) Nearly bandwidth and diffraction limited output High output stability throughout the entire tuning range Adaptable to different pump pulse energy, repetition rate and pulse duration Second Harmonic Bandwidth Compressor (SHBC)-TOPAS-400-WL system is a nonlinear optics device devoted for generation of a narrow bandwidth (3-10 cm¯¹) continuously wavelength tunable pulse when pumped by a femtosecond to picosencond pulse with bandwidth of 20-500 cm¯¹. The system is pumped by a fundamental harmonic of femtosecond (picosecond) Ti:sapp­ire laser amplifiers and continuh ously covers wavelength range from 470 to 2400 nm. With optional frequency mixer this range can be extended down to 240 nm. The system consists of two units: a second harmonic generator with bandwidth narrowing – SHBC, which produces a narrow bandwidth (3-7 cm¯¹) pump pulse and a white-light continuum seed pulse, and a picosecond optical parametric amplifier of white-light TOPAS-400-WL pumped and seeded by SHBC. The system features high output stability throughout the entire tuning range, high conversion efficiency, nearly bandwidth and diffraction limited output, and full computer control via USB port. It can operate in wide range of pump energies, from 0.3 to 4 milijoule and produce output energies of more than 400 microjoule in the visible. The SHBC-TOPAS-400-WL system is a valuable extension of femtosecond Ti:sapphire amplifiers enabling narrow band Raman spectroscopy measurements. The system, in combination with a femtosecond optical parametric amplifier TOPAS-C, is the first choice tool for single-shot surface sum-frequency spectroscopy, where SHBC-TOPAS-400-WL system provides a continuously wavelength tunable narrow bandwidth visible or UV pulse, and TOPAS-C provides a continuously wavelength tunable broad bandwidth infrared pulse. Full computer control via USB port and dedicated software Pump into TOPAS: SHBC, 400 nm, 7.5 cm-1, 0.85 mJ Pump into SHBC: 800 nm, 100 fs, 1.6 mJ Stimulated Raman spectroscopy Surface sum-frequency Signal Idler 1000 1500 Wavelength, nm Typical tuning curve of SHBC-TOPAS-400-WL

MODELS Model SHBC (without TOPAS) SHBC-TOPAS-400-WL SHBC-TOPAS-400-WL-SH1 SHBC-TOPAS-400-WL-SH2 SPECIFICATIONS SHBC Output wavelength Conversion efficiency Spectral width TOPAS-400-WL Tuning range (Signal + Idler) Conversion efficiency at peak Spectral width Time-bandwidth product Energy instability Signal and Idler Second Harmonic Tuning range Conversion efficiency at peak Spectral width 400±10 nm >25% <10 cm¯¹ 480–2400 nm >20% (of pump from SHBC) <20 cm¯¹ @ 500–730 nm, 870–2400 nm <1.2 <6% rms @ 500–700 nm, 900–2000 nm 240–500 nm >25% (of Signal) <25 cm¯¹ @ 250–365 nm, 435–500 nm...