TY - JOUR
T1 - Laser spectroscopy with a pulsed, narrowband infrared optical parametric oscillator system
T2 - a practical, modular approach
AU - Baxter, G. W.
AU - Barth, H.-D.
AU - Orr, B. J.
PY - 1998/5
Y1 - 1998/5
N2 - A pulsed optical parametric oscillator (OPO), based on bulk lithium niobate pumped at 1.064 μm and injection-seeded at ∼1.55 μm by a single-mode tunable diode laser, has been developed to serve as a narrowband coherent infrared spectroscopic source. The OPO cavity comprises a slightly misaligned three-mirror ring that is operated passively, to provide continuous tunability of the signal (∼1.55 μm) and idler (∼3.4 μm) output radiation over several cm-1 in a single scan. The potential of the OPO system for linear and nonlinear-optical spectroscopy is demonstrated by recording high-resolution photoacoustic absorption and coherent anti-Stokes Raman spectra of methane, as a gas and in a pulsed supersonic free jet. This narrowband tunable infrared source is shown to scan reliably with an optical bandwidth as small as 0.007 cm-1 (210 MHz) full width half maximum (fwhm), close to the fourier-transform limit.
AB - A pulsed optical parametric oscillator (OPO), based on bulk lithium niobate pumped at 1.064 μm and injection-seeded at ∼1.55 μm by a single-mode tunable diode laser, has been developed to serve as a narrowband coherent infrared spectroscopic source. The OPO cavity comprises a slightly misaligned three-mirror ring that is operated passively, to provide continuous tunability of the signal (∼1.55 μm) and idler (∼3.4 μm) output radiation over several cm-1 in a single scan. The potential of the OPO system for linear and nonlinear-optical spectroscopy is demonstrated by recording high-resolution photoacoustic absorption and coherent anti-Stokes Raman spectra of methane, as a gas and in a pulsed supersonic free jet. This narrowband tunable infrared source is shown to scan reliably with an optical bandwidth as small as 0.007 cm-1 (210 MHz) full width half maximum (fwhm), close to the fourier-transform limit.
UR - http://www.scopus.com/inward/record.url?scp=0000112816&partnerID=8YFLogxK
U2 - 10.1007/s003400050451
DO - 10.1007/s003400050451
M3 - Article
AN - SCOPUS:0000112816
VL - 66
SP - 653
EP - 657
JO - Applied Physics B: Lasers and Optics
JF - Applied Physics B: Lasers and Optics
SN - 0946-2171
IS - 5
ER -