Broad Band Photophoretic Spectroscopy
S. Arnold and Y. Amani
Optics Letters 5, 242-244 (1980)

A means for obtaining broadband photophoretic spectra is described. The sensitivity of the technique if found in accordance with radiometric theory to increase markedly with pressure reduction below 1 atm. Noise oscillation on a single crystallite (~5um) of CdS is presented.