Mohammed N. Islam

Abstract: We demonstrate a prototype sensor capable of measuring specular and diffuse reflectance spectra from samples 3.6 m away. The sensor utilizes mid-wave to long-wave infrared supercontinuum light coupled into a rotational FTIR spectrometer to actively probe remote samples. We measure the diffuse reflectance of acetaminophen at 41.77 μg/cm2 on a glass substrate and find that a modified Bobbert-Vlieger analysis can estimate the effects of particle size distribution on return spectra. We find that the measured return from stand-off particulate measurements depends not only on the chemical identity, but also the size and distribution of particles on the substrate.

TL;DR: The exploratory findings of this study suggest once asymptomatic, a compensatory hemodynamic response may support the restoration of reaction time despite ongoing physiological recovery.

TL;DR: In this article, an all-fiber-integrated supercontinuum laser with time-averaged power scalable up to 10.5W with diffraction limited beam quality is demonstrated.

TL;DR: In this paper, a supercontinuum covering 0.45-1.2 mum is scaled from 250-740 mW by varying the repetition rate of a frequency doubled telecom laser diode.

TL;DR: In this paper, a detection system is configured to convert light received while the laser diodes are off into a first signal and light received when at least one laser is on into a second signal, which includes light reflected from the sample, and to generate a two-dimensional or three-dimensional image using the time of flight measurement.