Abstract

A recent paper [J. Opt. Soc. Am. B 24, 1633 (2007)] reports the gain and sensitivity of a time-resolved fluorescence spectrometer based on parametric amplification. We question the claimed detection limit and explanation for the unusual temporal shape of the measured signal at very low levels of fluorescence. We provide an alternative explanation for the observations. Several other points are also clarified.

© 2008 Optical Society of America

Determination of the detection limit for a noncollinear optical parametric amplification-gated femtosecond time-resolved fluorescence spectrometer—Reply to the Comment on “Ultrasensitive femtosecond time-resolved fluorescence spectroscopy for relaxation processes by using parametric amplification”

Yuxiang Weng, Xiaofeng Han, and Jingyuan Zhang
J. Opt. Soc. Am. B 25(10) 1627-1631 (2008)

Ultrasensitive femtosecond time-resolved fluorescence spectroscopy for relaxation processes by using parametric amplification

Xiao-Feng Han, Xing-Hai Chen, Yu-Xiang Weng, and Jing-Yuan Zhang
J. Opt. Soc. Am. B 24(7) 1633-1638 (2007)

Noncollinear optical parametric amplifier based femtosecond time-resolved transient fluorescence spectra: characterization and correction

Hailong Chen, Yuxiang Weng, and Jingyuan Zhang
J. Opt. Soc. Am. B 26(8) 1627-1634 (2009)

Comment on “Superluminal solitons in a Λ-type atomic system with two-folded levels”

Chao Hang, Bin Luo, and Guoxiang Huang
J. Opt. Soc. Am. B 25(6) 951-954 (2008)

Minimization of geometric-beam broadening in a grating-based time-domain delay line for optical coherence tomography application: reply to comment

Zhen Jiang, Quing Zhu, and Daqing Piao
J. Opt. Soc. Am. A 25(9) 2298-2298 (2008)