[1] O'Keefe A,Decon G D. Cavity ring-down optical spectrometer for absorption measurements using pulsed lasersources [J]. Rev. Sci. Instrum.,1988,59(12): 2544
[2] Herbelin J M,Mckay J A. Sensitive measurement of photon lifetime and true reflectances in an optical cavity bya phase-shift method [J]. Appl. Opt.,1980,19(1): 144