A means for obtaining broadband photophoretic spectra is described. The sensitivity of the technique is found in accordance with radiometric theory to increase markedly with pressure reduction below 1 atm. Noise oscillation induced by radiometric torques is contained through the use of electronic damping. The first broadband spectrum on a single crystallite (~5 μm) of CdS is presented.
© 1980 Optical Society of America
Original Manuscript: February 11, 1980
Published: June 1, 1980
S. Arnold and Y. Amani, "Broadband photophoretic spectroscopy," Opt. Lett. 5, 242-244 (1980)