Picosecond absorption relaxation measured with nanosecond laser photoacoustics
- 18 October 2010
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 97 (16), 163701
- https://doi.org/10.1063/1.3500820
Abstract
Picosecond absorption relaxation—central to many disciplines—is typically measured by ultrafast (femtosecond or picosecond) pump-probe techniques, which however are restricted to optically thin and weakly scattering materials or require artificial sample preparation. Here, we developed a reflection-mode relaxation photoacoustic microscope based on a nanosecond laser and measured picosecond absorptionrelaxation times. The relaxation times of oxygenated and deoxygenated hemoglobin molecules, both possessing extremely low fluorescence quantum yields, were measured at 576 nm. The added advantages in dispersion susceptibility, laser-wavelength availability, reflection sensing, and expense foster the study of natural—including strongly scattering and nonfluorescent—materials.Keywords
This publication has 16 references indexed in Scilit:
- Ultrafast transient absorption spectroscopy: principles and application to photosynthetic systemsPhotosynthesis Research, 2009
- Near-IR absorption saturation and mechanism of picosecond recovery dynamics of copper selenide nanostructured via aluminaJournal of Applied Physics, 2009
- Ultrafast Proteinquake Dynamics in Cytochrome cJournal of the American Chemical Society, 2009
- Subpicosecond UV spectroscopy of carbonmonoxy-myoglobin: absorption and circular dichroism studiesPhysical Chemistry Chemical Physics, 2007
- Femtosecond Time-Resolved Absorption of Oxyhaemoglobin Photolysis in Living ErythrocytesChinese Physics Letters, 2004
- Rayleigh-Type Nondegenerate Four-Wave Mixing: Ultrafast Measurement and Field CorrelationPhysical Review Letters, 2002
- Novel absorber for passive mode-locking of Rhodamine 6G dye laserOptics Communications, 1989
- Ultrafast pump–probe measurement using intensity correlation of incoherent lightJournal of the Optical Society of America B, 1986
- A discussion of the problem of determining multiple lifetimes from picosecond absorption recovery data as encountered in two carbocyanine dyesApplied Physics B Laser and Optics, 1983
- Substituent and environmental effects on the picosecond lifetimes of the polymethine cyanine dyesIEEE Journal of Quantum Electronics, 1981