# Sensing earth’s rotation with a helium–neon ring laser operating at 115  μm

> Research article (Optics Letters, 2015) · cited 17× · AI/ML

**Wikidata**: [openalex:W2037882061](https://www.wikidata.org/wiki/openalex:W2037882061)  
**Source**: https://4ort.xyz/entity/sensing-earths-rotation-with-a-heliumneon-ring-laser-operating-at-115-m