High-Resolution two-photon laser-induced fluorescence spectroscopy of nitric oxide Conference Paper uri icon

abstract

  • Two-photon laser-induced fluorescence (LIF) spectroscopy of nitric oxide is performed using a high-resolution optical parametric generator (OPG)/ optical parametric amplifier (OPA) system. The OPG/OPA system is injection-seeded using a near-infrared telecommunications diode laser and pumped using the third harmonic output of an injection-seeded, Q-switched Nd:YAG laser. Sub-Doppler spectra were recorded by performing the two-photon LIF measurements using counter-propagating pump beams. Both Stark shifting and saturation of the two-photon resonances are clearly evident. The physics of the two-photon absorption process is investigated in detail using direct numerical solution of the time-dependent density matrix equations. The theoretical results are compared with the results of the high-resolution NO experiments. The implications of the results for practical diagnostic application of two-photon LIF for measurements of NO and other species is discussed.

author list (cited authors)

  • Kulatilaka, W. D., & Lucht, R. P.

publication date

  • January 2007