Retro-modulator links with a mini-rover
An optical sensors web in a star pattern is formed and tested utilizing modulating retro-reflectors, where a multitude of senors was simulated by a retro-modulator on a mini-rover.
modulating retro-reflector↗
Engineering topics
Esproles, C.
Publications and source records attributed to Esproles, C..
High-efficiency pulsed laser transmitters for deep-space communication
Highly efficient laser sources are required for deep space optical telecommunication. This paper investigates the efficiency components for pulsed diode pumped solid state laser transmittersand determines the overall wall-plug efficiency applicable to a spaceborne system.
Solid↗
Frequency-Stabilized Diode-Pumped Tm, Ho: YLF Local Oscillator with + 4 GHz of Tuning Range
A tunable, single-frequency, frequency-stabilized, diode-pumped Tm,Ho: YLF laser is described. The laser, which demonstrates the function of a local-oscillator for coherent Doppler lidar in space, has continuous frequency tunability of more than 8 GHz.
TM↗
Directional Reflectance Characterization Facility and
A precision reflectance characterization facility, constructed.
reflectance characterization radiometers MISR↗
Frequency Swept Diode-pumped Single Frequency TM,Ho:YLiF Laser for spaceborne Doppler Lidar
Optical heterodyne experiments involving the photomixing of two single frequency, deode-pumped thulium holmium yttrium lithium flouride lasers are described. Operated in external frquency stabilization loops, the lasers exhibit 1MHz short term stability, and are photomixed and offset-locked at 140 MHz. Summation of sine wave modulation onto the PZT control voltage on one laser results in frequency swept operation over a continuous tuning range of 160 MHz.
Doppler Lidar Optical heterodyne experiments↗