Sm. Arrivo et al., BROAD-BAND FEMTOSECOND TRANSIENT INFRARED-SPECTROSCOPY USING A 256X256 ELEMENT INDIUM-ANTIMONIDE FOCAL-PLANE DETECTOR, Optics letters, 22(19), 1997, pp. 1488-1490
Application and characterization of large-format IR focal-plane arrays
as detectors for ultrafast, high-resolution IR spectroscopy are discu
ssed. We also present generation of broadband IR probe-reference pulse
s by use of collinear non-phase-matched geometry and shot-to-shot dual
-track normalization to obtain transient spectra from broadly absorbin
g hydrogen-bonded systems. As much as 400-cm(-1) -wide coverage with 1
5-cm(-1) FWHM spectral resolution and +/-6.4 x 10(-4) (Delta OD = 3 x
10(-4)) baseline standard deviation (+/-1 sigma) is demonstrated near
2.9 mu m. (C) 1997 Optical Society of America.