Moku:Go Laser Lock Box

Compare all Laser Lock Boxes


The Moku:Go Laser Lock Box enables you to lock a laser’s frequency to a reference cavity or atomic transition using high-performance modulation locking techniques. The Laser Lock Box includes a “Lock Assist” feature, enabling the user-defined locking process to quickly lock to any zero-crossing on the demodulated error signal. With the Laser Lock Box application, Moku:Go is the most cost-effective laser-locking tool on the market.



Local oscillator frequency
1 mHz to 20 MHz

Scan frequency
Up to 10 MHz

Infinite impulse response lowpass filter corner frequency
260.1 Hz to 3.516 MHz (second or fourth order)

Demodulation frequency
1  mHz to 30 MHz

Integrator crossover frequency
312.5 mHz to 31.25 kHz, 988.2 mHz to 9.882 MHz (double integrator)

Ultra-fast data acquisition
Snapshot mode up to 125 MSa/s, continuous mode up to 1 MSa/s

DAC resolution
16 bits

Input coupling
AC or DC

Key features

Maintain frequency lock with two 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

Lock Assist
Configure custom locking stages to enable Lock Assist, allowing you to lock on to any zero-crossing in the demodulated error signal

Onboard Oscilloscope
Probe within the signal processing chain to observe signals with the integrated 125 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 palette view


Pound-Drever-Hall Technique

Precision spectroscopy

Gravitational wave detection

Custom phase-locked loop

Other closed-loop control systems


Moku:Go Datasheet
Moku:Go's Laser Lock Box Datasheet

User Manual
Moku:Go's Laser Lock Box User Manual

Software & APIs

Stabilize a laser's frequency to a reference cavity or atomic transition using high-performance modulation locking techniques. Download Moku software for desktop and integrate with APIs for Python, MATLAB, and LabVIEW.

Intuitive software for Windows and Mac

Configure your instrument and save and share data with Moku software. Free and easy to use, all instruments are included in demo mode with no software license required.

Try it in demo mode
Moku:Go Laser Lock Box LLB error signal

Multiple embedded instruments

In addition to the Laser Lock Box, this instrument also includes an embedded oscilloscope, onboard high-speed waveform generator with a maximum frequency of up to 20 MHz, and more. The math channel features an FFT option for basic spectral analysis. You can also access the pop-out window for the programmable power supplies on M1 and M2 models.

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 custom locking stages, synchronized scanning, and configurable output limiters optimized specifically for cavity stabilization systems.


Available on Moku:Go hardware

A powerful FPGA paired with a high-quality analog front-end make Moku:Go the most robust hardware in education, capable of complex, real-time digital signal processing. An integrated Wi-Fi hotspot and programmable power supplies ensure that students have the complete solution they need all four years (and beyond).

Moku:Go features a suite of twelve instruments

Replace multiple instruments with a single device that has everything students and professionals need for a fraction of the cost.