--- title: Auto Relocking ECDL Using Red Pitaya description: This project is for automatically relocking the External Cavity Diode Lasers (ECDLs) by wavemeter and/or cavity transmission using Red Pitaya. image: https://content.redpitaya.com/hubfs/fig1.jpg --- [![Red Pitaya](https://content.redpitaya.com/hubfs/raw_assets/public/Red_Pitaya_November_2021/images/redpitaya-logo-des.svg "Red Pitaya")](https://redpitaya.com/) [![Red Pitaya](https://content.redpitaya.com/hubfs/raw_assets/public/Red_Pitaya_November_2021/images/redpitaya-logo.svg "Red Pitaya")](https://redpitaya.com/) - Products - [STEMlab 125-14 Gen 2](https://redpitaya.com/stemlab-125-14-gen2/) - [STEMlab 125-14](https://redpitaya.com/stemlab-125-14/) - [SIGNALlab 250-12](https://redpitaya.com/signallab-250-12/) - [SDRlab 122-16](https://redpitaya.com/sdrlab-122-16/) - [STEMlab TI (Texas Instruments)](https://redpitaya.com/stemlab-ti-texas-instruments/) - [Multi-channel Solutions](https://redpitaya.com/multi-channel-solutions/) - [Accessories](https://redpitaya.com/accessories/) - [Applications](https://redpitaya.com/applications/) - Documentation - [Technical Documentation](https://redpitaya.com/documentation/) - [Teaching materials](https://redpitaya.com/teaching-materials/) - [Student projects](https://redpitaya.com/student-projects/) - [User forum](https://forum.redpitaya.com/) - [About](https://redpitaya.com/about-us/) - [History](https://redpitaya.com/history/) - [Distributors](https://redpitaya.com/distibutors-red-pitaya/) - [Blog](https://content.redpitaya.com/blog) [Shop](https://redpitaya.com/shop/) - [ACADEMIA](https://redpitaya.com/academia/) - [RADIO AMATEURS](https://redpitaya.com/radio-amateurs/) - [Home](https://redpitaya.com/) - Products - [STEMlab 125-10](https://redpitaya.com/stemlab-125-10/) - [STEMlab 125-14](https://redpitaya.com/stemlab-125-14/) - [SIGNALlab 250-12](https://redpitaya.com/signallab-250-12/) - [SDRlab 122-16](https://redpitaya.com/sdrlab-122-16/) - [Accessories](https://redpitaya.com/accessories/) - [Applications](https://redpitaya.com/applications/) - [Resources](https://redpitaya.com/documentation/) - [Shop](https://redpitaya.com/shop/) - [About](https://redpitaya.com/about-us/) - [Blog](https://content.redpitaya.com/blog) - [Compare](https://redpitaya.com/compare/) - [Login / Register](https://redpitaya.com/my-account/) ### Red Pitaya Blog [Home](https://redpitaya.com) » [Academia](https://content.redpitaya.com/blog/tag/academia) » [Academia](https://content.redpitaya.com/blog/tag/academia) # Auto Relocking ECDL Using Red Pitaya - Posted by ![Red Pitaya Technical Editorial Team](https://content.redpitaya.com/hubfs/Red-pitaya-fav-ikona.png) [Red Pitaya Technical Editorial Team](https://redpitaya.com/Red-Pitaya-Blog-team/) , February 19, 2024 ![](https://content.redpitaya.com/hubfs/fig1.jpg) This project uses Red Pitaya to automate relocking of External Cavity Diode Lasers (ECDL). A special web app makes sure the lasers stay locked in real-time, using signals from the laser cavity or a wavemeter. Originally for the strontium optical tweezers used in quantum computing, it's also handy for things like precise clocks and space missions. Find the whole project [here](https://github.com/mehrdadzarei/AutoRelocking_ECDL_Laser_by_Redpitaya): Or watch the video below 👇       ### About the Red Pitaya Team The Red Pitaya Technical Editorial Team is a cross-functional group of technical communicators and product specialists. By synthesizing insights from our hardware developers and global research partners, we provide verified, high-value content that bridges the gap between open-source innovation and industrial-grade precision. Our mission is to make advanced instrumentation accessible to engineers, researchers, and educators worldwide. ##### Categories - [academia (47)](https://content.redpitaya.com/blog/tag/academia) ##### Recent Posts - [![MaRCoS: An Open-Source MRI Control System Built with Red Pitaya SDRlab 122-16](https://content.redpitaya.com/hs-fs/hubfs/blog%20featured%20image%20-%202026-08-25T134239.841.jpg?width=767&name=blog%20featured%20image%20-%202026-08-25T134239.841.jpg)](https://content.redpitaya.com/blog/open-source-mri-control-system-sdrlab/) [MaRCoS: An Open-Source MRI Control System Built with Red Pitaya SDRlab 122-16](https://content.redpitaya.com/blog/open-source-mri-control-system-sdrlab/) September 15, 2026 - [![Scalable and Portable Fast Neutron Detection: Dual-Channel SiPM Readout with Red Pitaya FPGA DAQ](https://content.redpitaya.com/hs-fs/hubfs/blog%20featured%20image%20-%202026-08-24T092005.711.jpg?width=767&name=blog%20featured%20image%20-%202026-08-24T092005.711.jpg)](https://content.redpitaya.com/blog/scalable-compact-fast-neutron-detection-red-pitaya-sipm) [Scalable and Portable Fast Neutron Detection: Dual-Channel SiPM Readout with Red Pitaya FPGA DAQ](https://content.redpitaya.com/blog/scalable-compact-fast-neutron-detection-red-pitaya-sipm) September 8, 2026 - [![Autonomous Sub-100ms Laser Relocking in Trapped-Ion Quantum Experiments: Scaling the BLOOD Lockbox Architecture with Red Pitaya SoCs](https://content.redpitaya.com/hs-fs/hubfs/blog%20featured%20image%20-%202026-08-12T152830.130.jpg?width=767&name=blog%20featured%20image%20-%202026-08-12T152830.130.jpg)](https://content.redpitaya.com/blog/sub-100ms-automated-laser-relocking-red-pitaya-trapped-ion-quantum) [Autonomous Sub-100ms Laser Relocking in Trapped-Ion Quantum Experiments: Scaling the BLOOD Lockbox Architecture with Red Pitaya SoCs](https://content.redpitaya.com/blog/sub-100ms-automated-laser-relocking-red-pitaya-trapped-ion-quantum) September 1, 2026 ##### Subscribe to our newsletter ![Red Pitaya](https://content.redpitaya.com/hubfs/raw_assets/public/Red_Pitaya_November_2021/images/redpitaya-logo-wh.svg "Red Pitaya") An open-source solution for hobbyists, professors, radio amateurs and industrial clients. **Red Pitaya** Velika pot 21, 5250 Solkan Slovenia, Europe Phone: +386 30 322 719 Email: [info@redpitaya.com](mailto:info@redpitaya.com) **Red Pitaya US** TX, Dallas - Downtown Republic Center 325 N. 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