Chris J. Fredricksen

TL;DR: In this article, a scanning Fabry-Perot transmission filter composed of a pair of dielectric mirrors has been demonstrated at millimeter and sub-millimeter wavelengths, where high resistivity in the silicon layers was found important for achieving high transmittance and finesse, especially at the longer wavelengths.

TL;DR: In this article, the growth and characterization of aqueous spray-deposited thin films of PbSSe was presented. But the results were limited to the 3-5 micron mid-wave infrared (MWIR) wavelength range.

TL;DR: In this article, a two level full factorial optimization study with evaporation-chamber pressure, boat current, substrate temperature, and degree of polymer infusion (for hardening) was performed.

TL;DR: In this paper, the separation between two interleaved pulse trains from a far-infrared (1.5-4 THz) p-Ge laser, which is mode-locked by rf gain modulation at the second harmonic of the roundtrip frequency, is demonstrated by changing the electric bias at the rf contacts.

TL;DR: In this article, the dispersion-dependent features for infrared MIM devices are demonstrated by experiment, electrodynamic simulation, and an analytic model based on standing waves, which can enhance broad-band sensitivity for LWIR bolometers.