SpaceTech Laser Head Electronics (LHE)
SpaceTech GmbH
Low-noise, high-speed Laser Head Electronics for space and laboratory use, enabling ultra-stable laser sources.
Technical specifications
- DC bias current
- <= 500 mA
- Ultra-low current noise
- <= 1 nA/√(Hz) @ f > 1 kHz
- AC current
- <= 500 mA
- Modulation bandwidth
- <= 10 MHz
- Temperature control
- Precision Thermo Electric Cooler (TEC) control loops for seed-laser, pump-laser and photodiode/output power
- Telemetry/telecommand interface
- UART, SpaceWire or CAN
About
SpaceTech develops Laser Head Electronics (LHE) for space and laboratory use with outstanding characteristics, enabling laser technology with low noise, high speed and utmost precision. Main functionalities include temperature control loops based on precision Thermo Electric Coolers (TEC) for seed-laser, pump-laser and photodiode/output power stabilization, low-noise modulated Laser Current Sources for seed-laser power and pump-laser current, and acquisition of analogous housekeeping telemetry/telecommand interfaces via UART, SpaceWire or CAN. SpaceTech’s laser electronics have flown or been developed for demanding missions including the GRACE-FO Laser Ranging Interferometer (LRI), the MERLIN Frequency Reference Unit (FRU), the High Stability Laser (HSL) for ESA’s Next Generation Gravity Mission (NGGM), and the Laser Interferometer Space Antenna (LISA) mission, which requires ultra-stable laser sources in both power and frequency.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.
