SHOT-NOISE-LIMITED DETECTION OF ABSORBENCY CHANGES INDUCED BY SUBPICOJOULE LASER-PULSES IN OPTICAL PUMP-PROBE EXPERIMENTS

Authors
SAVIKHIN S
Citation
S. Savikhin, SHOT-NOISE-LIMITED DETECTION OF ABSORBENCY CHANGES INDUCED BY SUBPICOJOULE LASER-PULSES IN OPTICAL PUMP-PROBE EXPERIMENTS, Review of scientific instruments, 66(9), 1995, pp. 4470-4474
Citations number
10
Categorie Soggetti
Physics, Applied","Instument & Instrumentation
Journal title
Review of scientific instruments → ACNP
ISSN journal
00346748
Volume
66
Issue
9
Year of publication
1995
Pages
4470 - 4474
Database
ISI
SICI code
0034-6748(1995)66:9<4470:SDOACI>2.0.ZU;2-9
Abstract
We describe a high-frequency modulation and detection system capable o f measuring absorbance changes Delta A on the order of 10(-6) in optic al pump-probe experiments using submilliwatt laser powers from a mode- locked ultrafast laser. For probe beam powers greater than or equal to 9 mu W, the system offers nearly shot-noise-limited performance. (C) 1995 American Institute of Physics.