Moku:Lab’s Laser Lock Box
Overview
Moku:Lab’s Laser Lock Box enables you to lock a laser’s frequency to a reference cavity or atomic transition using high-performance modulation locking and modulation-free locking techniques. The Laser Lock Box includes a “Tap‑to‑Lock” feature, enabling you to quickly lock to any zero-crossing on the demodulated error signal. It also features an integrated 2‑channel oscilloscope, allowing you to observe signals at any point in the signal processing chain at up to 500 MSa/s.
Specs
Local oscillator frequency
1 mHz to 200 MHz (3.55 µHz resolution)
Scan frequency
10 MHz
Infinite impulse response low-pass or bandpass filter
1 kHz to 14 MHz corner frequency (second or fourth order)
Coupling
AC / DC
Integrator crossover frequency
• 1.25 Hz to 125 kHz (fast PID)
• 19.53 mHz to 1.953 kHz (slow PID)
Ultra-fast data acquisition
• Snapshot mode up to 500 MSa/s
• Continuous mode up to 1 MSa/s
DAC resolution
16 bits
Filter roll-off
12 dB / 24 dB per octave filter roll-off
Key features
Maintain frequency lock with two independent PID controllers
Individually configure high- and low-bandwidth PID controllers for fast and slow feedback
Scan waveforms
Positive sawtooth, negative sawtooth, triangle
Post-demodulation filtering
Filter demodulated signals with up to fourth order infinite impulse response low-pass filters: Butterworth, Chebyshev, Chebyshev II, Elliptic, Cascaded, Gaussian, Bessel, Legendre
Block diagram view of the signal processing chain
Clear overview of the laser locking to aid control and understanding
Tap-to-Lock
Quickly lock to any zero-crossing in the error signal using the ‘Tap-to-Lock” feature
Onboard oscilloscope
Virtually probe within the signal processing chain to observe signals with the integrated 500 MSa/s oscilloscope
Stabilize a laser’s frequency to a reference cavity or atomic transition
Supported locking techniques include Pound-Drever-Hall (PDH) locking, Heterodyne offset phase-locking, RF locking, and Dither locking
Flexible configuration of the demodulation source
Demodulate signals with internal or external local oscillators
Custom controls
Quickly access the controls you need with a customizable control palette view
Applications
Pound-Drever-Hall technique
Precision spectroscopy
Gravitational wave detection
Custom phase-locked loop
Other closed-loop control systems
Documentation
Specs
Datasheet
User Manual
Freedom in the lab when you need it
You’re not tethered to your bench with Moku software for iPad. Tap to lock your laser’s frequency while you move freely throughout the lab.
Try it in demo mode
High performance frequency stabilization
Moku:Lab replaces stand-alone waveform generators, phase shifters, demodulators, filters, and PID controllers. Its high-performance digital signal processing, powerful visualization, and flexible user interface delivers an all-in-one solution for laser frequency stabilization.
Block diagram view
Get a bird’s-eye view of your control system and observe signals anywhere in the signal processing chain using the integrated oscilloscope. Use conditional triggering, synchronized scanning, and configurable output limiters optimized specifically for cavity stabilization systems.
Available on Moku:Lab hardware
The digital signal processing power of an FPGA coupled with the high-quality analog front-end ensures that with Moku:Lab you never have to sacrifice performance for flexibility.
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