# Humidity enhanced N2O photoacoustic sensor with a 4.53 μm quantum cascade laser and Kalman filter

> Research article (Photoacoustics, 2021) · cited 42× · AI/ML

**Wikidata**: [openalex:W3200214569](https://www.wikidata.org/wiki/openalex:W3200214569)  
**Source**: https://4ort.xyz/entity/humidity-enhanced-n2o-photoacoustic-sensor-with-a-4-53-m-quantum-cascade-laser-and-kalman-filter