Accelerating optics and photonics research

Performing complex optical experiments like PDH locking can be tedious and time-consuming — so we laid it all out for you. Download our new ebook for a step-by-step walkthrough of modern laser stabilization techniques. 

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The ultimate guide to PDH locking: performing efficient laser frequency stabilization

Download the ebook to streamline the Pound-Drever-Hall laser locking technique with next-generation tools and strategies.


A test platform you can rely on.

Moku devices integrate a full suite of instruments crucial for laser stabilization and measurement, like the Laser Lock Box, Phasemeter, and Lock-in Amplifier, while providing common test essentials like an Oscilloscope, Spectrum Analyzer, and Waveform Generator. Thanks to the software-defined, multi-instrument platform, it's easy to integrate custom algorithms into your test sequence.

Seamless lock-in detection

Utilize the 4-channel, 600 MHz Lock-in Amplifier for multiple frequencies or harmonics. Achieve ultra-low noise performance with 10-bit and 18-bit blended ADCs.

Painless laser locking

Easily lock lasers to a cavity using the Laser Lock Box — no manual labor required. With Lock Assist, you can instantly lock to any zero-crossing on the demodulated error signal.

Better optical PLLs

The integrated PID Controller enables easy laser frequency stabilization and phase locking. Adjust parameters and view results in real time to optimize closed-loop control.

HubSpot Video

Get your experiment up and running, faster

The Laser Lock Box supports PDH locking, fringe-side locking, tilt locking, RF locking, and dither locking. Combine the Laser Lock Box with additional instruments in Multi-instrument Mode to further tailor your setup to your research without needing to buy additional equipment. Watch the video to learn more.

Engineered for demanding applications. Like yours.

With Moku:Pro, you have access to multiple pieces of advanced optics instrumentation in one device. Deployed standalone or in Multi-instrument Mode, the Lock-in Amplifier, Laser Lock Box, and Phasemeter cover applications such as:

• Gravitational wave detection system development
• Interferometry
• Laser frequency stabilization with PDH locking
• Precision spectroscopy


Advance optics and photonics instruments in a single platform

We continually update our software with new features, so your Moku device gets better over time. Check out our latest upgrades for Moku:Lab, Moku:Pro, and Moku:Go to enable multi-window viewing and consistent instrument offerings across the entire Moku product line, strengthen API support, improve the capabilities of multiple software-defined instruments, and support a broader range of use cases for closed-loop control systems, spectroscopy, laser frequency stabilization, and more. 


Compare hardware platforms

Explore Moku hardware options. Compare the instrument specs to choose the right device for your application.

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About Liquid Instruments

Liquid Instruments delivers modern, software-defined test and measurement solutions that provide advanced capabilities, a great user experience, and custom programmability for maximum flexibility and performance in a range of applications.