8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique
J. Phys. IV France 04 (1994) C7-401-C7-404
Quantum efficiency and metastable lifetime measurements in ruby ( Cr 3+ : Al2O3) via lock-in rate-window photothermal radiometryA. Mandelis, Z.H. Chen and R. Bleiss
Photothermal and Optoelectronic Diagnostics Laboratory, Department of Mechanical Engineering, University of Toronto, Toronto, Canada, M5S 1A4
The newly developed photothermal detection technique of rate-window infrared radiometry has been applied to the measurement of the metastable state de-excitation parameters of a ruby laser rod. By applying the photothermal lock-in rate-window concept, the radiative lifetime and quantum efficiency of Cr3+ : Al2O3, have been measured with optimal signal-to-noise ratio (SNR) and simple, unambiguous interpretation from the extremum in the lock-in analyzer in-phase rate-window signal.
© EDP Sciences 1994