Previous laser tuning schemes for space-based missions based on optical phase-locked loops (OPLLs) involved use of many RF electronics, complicated FPGA setups, and multiple distributed feedback lasers (DFBs) that are not fast-tunable.

NASA Goddard Space Flight Center developed a single, fast-tunable seed laser system that does not involve the use of any OPLLs. The system is based on dual sideband locking. Extra phase modulation is added onto a frequency locking system, generating artificial locking points with a known frequency offset, maintaining the stability of the selected frequency.

The system uses fewer components and simple programming requirements.

NASA is actively seeking licensees to commercialize this technology. Please contact NASA’s Licensing Concierge at This email address is being protected from spambots. You need JavaScript enabled to view it. or call us at 202-358-7432 to initiate licensing discussions. Follow this link here  for more information.


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This article first appeared in the April, 2021 issue of Tech Briefs Magazine.

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