Improvement of Lambert-Beer Law Dynamic Range by the Use of Temporal Gates on Transmitted Light Pulse Through a Scattering Medium

Abstract

The Lambert-Beer law holding for pulsed lights transmitted through a scattering mediumwas examined using a streak camera. The Lambert-Beer law dynamic range is found to be limitedby floor levels that are caused by scattered photons and are controllable by the use of atemporal gate on the transmitted pulse. The dynamic range improvement obtained for a scatteringmedium of 2.8 cm^-1 scattering coefficient of a thickness of 80 mm by a temporal gate of 60 ps was as much as 50 dB and the Lambert-Beer law dynamic rang reached to 140 dB.