Zobrazeno 1 - 10
of 16
pro vyhledávání: '"77"'
Publikováno v:
SPIE Proceedings.
A 256 by 256 IRCMOS array with a 35 micrometer pitch operating in the (3 - 5) micrometer wavelength range at 77 K has been developed at LETI/LIR. The readout circuit was designed and processed with a 1.2 micrometer design rules standard CMOS technolo
Autor:
T.R. Clem
Publikováno v:
SPIE Proceedings.
Magnetic detection offers one approach to complement optical, infrared, radar, and acoustic sensing for wide-area detection, localization and classification applicable for a large class of subsurface structures. Sensors incorporating Superconducting
Publikováno v:
SPIE Proceedings.
Optical MEMS is a challenging new field that combines micro- optics with micro-mechanics in order to build compact systems. In this paper we present a miniaturized Fourier transform spectrometer (FTS) fabricated on silicon. The FTS is a Michelson int
Publikováno v:
Optical Astronomical Instrumentation.
We report on first astronomical results with a cross-dispersed optical echelle spectrograph fed by a near single-mode fiber. We also present on a novel design of a new adaptive optics (AO) optimized fiber-fed cross-dispersed echelle spectrograph. The
Publikováno v:
SPIE Proceedings.
An optical communication link using a micromachined corner cube reflector (CCR) was demonstrated to transmit digital signals over a range of 2 meters by reflecting an interrogating laser from a 5mW laser source. The surface micromachined CCRs are mad
Publikováno v:
SPIE Proceedings.
The end-to-end bit-error performance of 64-QAM transmission using a hybrid fiber-coax system test bed designed for delivery of 77 AM-VSB and 25 64-QAM video channels covering the frequency band 54 - 702 MHz was studied. Error-free QAM transmission wa
Autor:
T.R. Clem
Publikováno v:
SPIE Proceedings.
Sensors incorporating superconducting quantum interference devices provide the greatest sensitivity for magnetic anomaly detection available with current technology. During the 1980s, the Coastal Systems Station (CSS) developed a superconducting magn
Publikováno v:
SPIE Proceedings.
Using a well-characterized measurement system having 22 GHz bandwidth, we show that the relative intensity noise (RIN) of a commercial InGaAsP laser (multi-longitudinal mode) operating at 77 K is significantly reduced below room temperature values ov
Autor:
Antoni Rogalski, Jaroslaw Rutkowski
Publikováno v:
SPIE Proceedings.
P+-n long wavelength infrared radiation (LWIR) photodiodes were fabricated by arsenic diffusion into n-type HgCdTe bulk monocrystals. To improve the photodiode performance, a thickness of n-type base layer was limited. The photodiodes performance was
Publikováno v:
SPIE Proceedings.
A compact programmable tuning external cavity laser has been developed using a microprocessor as the controller in which a stepper motor is employed to execute the motions of the grating for wavelength continuous tuning and a dual stage Peltier cooli