Barium ion spectroscopy at 493nm with improved low-noise optogalvanic front-end. You don't even need a lock-in amplifier at this point :D Top curves are raw ADC data.

XLRPD: Low-noise large-area photodetector with XLR interface and phantom power. Place near hollow cathode lamp, shoot laser into lamp, and plug into audio interface for DSP lock-in spectroscopy. Easy to set up and unbeatable performance/cost. git.m-labs.hk/sinara-hw/xl... git.m-labs.hk/sb10q/sndlock

Compact Ion Trap Radiofrequency Source 193thz.com/citrs.html

Bye bye GitHub. ARTIQ's new home is at git.m-labs.hk/M-Labs/artiq

You've had it with the CUPS print server? Replace it with this 36-line #NixOS hack: git.m-labs.hk/M-Labs/it-in... #Linux #SysAdmin

We're leaving GitHub. ARTIQ and other main repositories will be progressively moved to git.m-labs.hk Forum post: forum.m-labs.hk/d/1070-shoul...

Hello Bluesky!