Simple and accurate fast-tunable laser system based on dual sideband locking
Simple and accurate fast-tunable laser system based on dual sideband locking (GSC-TOPS-202)
Provides high tuning capability and extreme simplicity.
Previous laser tuning schemes for space-based missions based on optical phase-locked loops (OPPLs) 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 has developed a single fast tunable seed laser system that does not involve the use of any OPLLs. 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.
- Single laser used for fast and easy tuning
- Fewer components required
- Simple programming requirements
- Laser system development
- Laser sensing systems