FALC 110 & mFALC 110

• High-speed analog laser frequency stabilization
• Up to 100 MHz (-3 dB) control bandwidth
• Ultra-fast feedback with <15 ns signal delay
• Enables laser linewidth reduction down to sub-Hz
• Fast current control for high-bandwidth noise suppression
• Slow feedback through piezo or temperature control for long-term stability
• mFALC 110 includes an integrated analog mixer for phase detection
• Designed for fast phase locking of two lasers to an external RF reference
• Suitable for TOPTICA ECDL and DFB laser systems
• Compact module for integration into advanced laser setups

The Fast Analog Linewidth Control (FALC 110) is a module for advanced laser frequency stabilization tasks, such as linewidth reduction and high-bandwidth frequency locking. Due to an optimized circuit layout, the -3 dB bandwidth of the fastest signal path reaches 100 MHz.
The mixing FALC (mFALC) additionally comprises an analog mixer for phase detection, and is designed for fast phase locking of two lasers to an external RF reference.

Module Type: Fast Analog Laser Locking Module
Control Bandwidth: Up to 100 MHz (-3 dB)
Feedback Delay: <15 ns
Fast Feedback: Laser Current
Slow Feedback: Piezo / Temperature
DC Gain: 15–80 dB
Fast Output: Max. ±2 V @ 50 Ω
Slow Integrator Bandwidth: 10 kHz
Slow Output: Max. ±5 V
mFALC RF Input: 10–200 MHz
mFALC LO Input: 10–200 MHz
Phase Detection: Analog Mixer (mFALC 110)
Operation: Frequency / Phase Locking

• High-Bandwidth Laser Frequency Stabilization
• Laser Linewidth Narrowing
• Frequency Locking
• Phase Locking
• Optical Frequency Metrology
• High-Resolution Spectroscopy
• Quantum Physics
• Quantum Optics
• Quantum Sensing & Metrology
• Optical Atomic Clocks
• Coherent Terahertz Applications