@article{25133, keywords = {measurement, transmission, beam, picosecond, spectra, spectrum}, author = {M. M Cynthia Hipwell and Chang-Lin Tien and Xianglei Mao and Richard E Russo}, title = {The dual beam picosecond continuum technique for measurement of short time-scale transmission spectra}, abstract = {

In this work, a dual-beam measurement technique is presented to measure the short-time-scale optical properties of novel materials. It is shown that the picosecond continuum probe source obtained from nonlinear interaction with H2O/D2O is highly variable and does not permit detection of small changes in absorption /transmission spectra. The dual-beam approach is proposed to allow simultaneous measurement of a sample's properties in both the excited and steady states. As an example, the technique is applied to the picosecond transmission spectrum of light-emitting porous silicon. Photo-induced absorption is observed at a level that could not be detected without the new technique.

}, year = {1998}, journal = {Experimental Heat Transfer}, volume = {11}, pages = {281-297}, month = {04/1998}, doi = {10.1080/08916159808946566}, note = {

LBNL-43857 NOT IN FILE

}, language = {eng}, }