Mmastodon SciencePhysics first seen 21 h ago, last 15 h ago, peak #6

397nm laser passes first wavemeter stability test

Original: Connected the 397nm # laser to the wavemeter for the first time and got my first (open loop) frequency stability measure

A physicist has connected a 397nm laser to a wavemeter for the first time and taken initial open-loop frequency stability measurements. The results look promising: drift is slow, so noise may be reduced with further averaging. The laser's linewidth is relevant to calcium ion Doppler cooling, which requires around 23MHz, suggesting the system is on track for ion trapping experiments.

Why now: Technical milestone in a laser setup relevant to trapped-ion physics, shared with a specialist community

397nm laserwavemetercalcium ion

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Evidence

• Connected the 397nm # laser to the wavemeter for the first time and got my first (open loop) frequency stability measurements. Doesn't look bad, the drift is slow so that noise might be reduced with more averaging. The linewidth for Ca+ ion Doppler cooling is 23MHz so it's in… · sjb@mstdn.io · 3

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