We present experimental evidence of electron compensation of a fixed ionic hologram in a photoref... more We present experimental evidence of electron compensation of a fixed ionic hologram in a photorefractive iron doped lithium niobate crystal configured as an optical filter.
ABSTRACT We present the thermal vacuum (TVAC) test results of the engineering model laser transmi... more ABSTRACT We present the thermal vacuum (TVAC) test results of the engineering model laser transmitter for the NASA Lunar Orbiter Laser Altimeter (LOLA) instrument.
In this paper we present the final configuration of the space flight laser transmitter as deliver... more In this paper we present the final configuration of the space flight laser transmitter as delivered to the Lunar Orbiter Laser Altimeter (LOLA) instrument along with some in-space operation performance data. The LOLA instrument is designed to map the lunar surface and provide unprecedented data products in anticipation of future manned flight missions. The laser transmitter has been operating on
We report on the design philosophy, technology readiness level advancement for space application,... more We report on the design philosophy, technology readiness level advancement for space application, laser performance verification, and independent assessment of a single frequency, ultra-low noise master oscillator power amplifier laser transmitter for the LISA mission.
We show post-spaceflight results for a silicon photonic integrated circuit micro-ring resonator. ... more We show post-spaceflight results for a silicon photonic integrated circuit micro-ring resonator. The free-carrier lifetime reduced by factor of 2 after radiation damage events in space.
Introduction: Space lidar measurements have made significant contributions to geophysics, geology... more Introduction: Space lidar measurements have made significant contributions to geophysics, geology, and other areas in planetary science. Lidar have been used in space for vertical profile measurements of surface and atmosphere over the past 20 years [1]. A major strength of laser altimetry (lidar measurements of surface elevation) is its geodetic accuracy, which allows planetary shapes to be determined so well as to enable placing constraints on internal structure and planetary evolution [2]. Early space lidars, such as the Mars Orbiter Laser Altimeter (MOLA) [3,4] and the Mercury Laser Altimeter (MLA) [5], used a single laser beam for measuring the surface elevation from orbit via the time-of-flight of the laser pulse. Five laser beams were used by the Lunar Orbiter Laser Altimeter (LOLA) to measure the lunar surface with higher spatial resolution and coverage [6]. Due to the small number of laser beams, the footprints of previous orbital lidar have not been contiguous and have sam...
We present experimental evidence of electron compensation of a fixed ionic hologram in a photoref... more We present experimental evidence of electron compensation of a fixed ionic hologram in a photorefractive iron doped lithium niobate crystal configured as an optical filter.
ABSTRACT We present the thermal vacuum (TVAC) test results of the engineering model laser transmi... more ABSTRACT We present the thermal vacuum (TVAC) test results of the engineering model laser transmitter for the NASA Lunar Orbiter Laser Altimeter (LOLA) instrument.
In this paper we present the final configuration of the space flight laser transmitter as deliver... more In this paper we present the final configuration of the space flight laser transmitter as delivered to the Lunar Orbiter Laser Altimeter (LOLA) instrument along with some in-space operation performance data. The LOLA instrument is designed to map the lunar surface and provide unprecedented data products in anticipation of future manned flight missions. The laser transmitter has been operating on
We report on the design philosophy, technology readiness level advancement for space application,... more We report on the design philosophy, technology readiness level advancement for space application, laser performance verification, and independent assessment of a single frequency, ultra-low noise master oscillator power amplifier laser transmitter for the LISA mission.
We show post-spaceflight results for a silicon photonic integrated circuit micro-ring resonator. ... more We show post-spaceflight results for a silicon photonic integrated circuit micro-ring resonator. The free-carrier lifetime reduced by factor of 2 after radiation damage events in space.
Introduction: Space lidar measurements have made significant contributions to geophysics, geology... more Introduction: Space lidar measurements have made significant contributions to geophysics, geology, and other areas in planetary science. Lidar have been used in space for vertical profile measurements of surface and atmosphere over the past 20 years [1]. A major strength of laser altimetry (lidar measurements of surface elevation) is its geodetic accuracy, which allows planetary shapes to be determined so well as to enable placing constraints on internal structure and planetary evolution [2]. Early space lidars, such as the Mars Orbiter Laser Altimeter (MOLA) [3,4] and the Mercury Laser Altimeter (MLA) [5], used a single laser beam for measuring the surface elevation from orbit via the time-of-flight of the laser pulse. Five laser beams were used by the Lunar Orbiter Laser Altimeter (LOLA) to measure the lunar surface with higher spatial resolution and coverage [6]. Due to the small number of laser beams, the footprints of previous orbital lidar have not been contiguous and have sam...
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Papers by Anthony Yu