Qualification and performance of a high-efficiency laser transmitter for deep-space optical communications
We review the design, performance, and qualification of a high-power Laser Transmitter Assembly (LTA) developed to support NASA’s Deep Space Optical Communications demonstration on the Psyche Mission. The LTA delivers up to 4.5 W at 1550 nm by use of a highly-efficient, cladding-pumped, polarization-maintaining fiber amplifier. The master oscillator supports modulation formats from 16- to 128-PPM for optical data transmission at >100 Mbps. We describe the environmental and performance testing of the LTA Engineering and Flight Models, including key metrics such as wavelength stability, signal linewidth, optical pulse width, pulse jitter, pulse extinction ratio, and polarization extinction ratio.
CACI International Inc. (United States)