Publication Date:
2019-07-13
Description:
NASAs Goddard Space Flight Center has been developing lidar to remotely measure CO2 and CH4 in the Earths atmosphere. The ultimate goal is to make space-based satellite measurements with global coverage. We are working on maturing the technology readiness of a fiber-based, 1.57-micron wavelength laser transmitter designed for use in atmospheric CO2 remote-sensing. To this end, we are building a ruggedized prototype to demonstrate the required power and performance and survive the required environment. We are building a fiber-based master oscillator power amplifier (MOPA) laser transmitter architecture. The laser is a wavelength-locked, single frequency, externally modulated DBR operating at 1.57-micron followed by erbium-doped fiber amplifiers. The last amplifier stage is a polarization-maintaining, very-large-mode-area fiber with ~1000 m2 effective area pumped by a Raman fiber laser. The optical output is single-frequency, one microsecond pulses with 〉450 J pulse energy, 7.5 KHz repetition rate, single spatial mode, and 〉 20 dB polarization extinction.
Keywords:
Lasers and Masers; Instrumentation and Photography
Type:
GSFC-E-DAA-TN67010
,
Components and Packaging for Laser Systems; Feb 01, 2018 - Feb 08, 2018; San Francisco, CA; United States
Format:
application/pdf
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