{"cited_by_count":881551,"description":"This cluster of papers focuses on molecular spectroscopic databases such as HITRAN, HITEMP, and GEISA, as well as the applications of various types of lasers in gas sensing, breath analysis, and high-temperature molecular spectroscopy. It covers topics such as terahertz quantum-cascade lasers, infrared laser absorption, photoacoustic spectroscopy, diode laser absorption, and cavity ring-down spectroscopy.","display_name":"Spectroscopy and Laser Applications","domain_id":"3","external_ids":{"openalex":"https://openalex.org/T11111","wikipedia":"https://en.wikipedia.org/wiki/Spectroscopy_databases"},"field_id":"16","id":"T11111","keywords":[{"display_name":"quantum cascade lasers","id":"quantum-cascade-laser","score":0.4177,"url":"https://openalex.org/keywords/quantum-cascade-laser"},{"display_name":"pressure broadening","id":"collisional-broadening","score":0.4078,"url":"https://openalex.org/keywords/collisional-broadening"},{"display_name":"trace gas detection","id":"trace-gas-detection","score":0.6152,"url":"https://openalex.org/keywords/trace-gas-detection"},{"display_name":"tunable diode laser absorption spectroscopy","id":"tunable-diode-laser-absorption-spectroscopy","score":0.7642,"url":"https://openalex.org/keywords/tunable-diode-laser-absorption-spectroscopy"},{"display_name":"cavity ring-down spectroscopy","id":"cavity-ring-down-spectroscopy","score":0.5166,"url":"https://openalex.org/keywords/cavity-ring-down-spectroscopy"},{"display_name":"methane detection","id":"methane-detection","score":0.3415,"url":"https://openalex.org/keywords/methane-detection"},{"display_name":"photoacoustic spectroscopy","id":"photoacoustic-spectroscopy","score":0.2722,"url":"https://openalex.org/keywords/photoacoustic-spectroscopy"},{"display_name":"wavelength modulation spectroscopy","id":"wavelength-modulation-spectroscopy","score":0.8657,"url":"https://openalex.org/keywords/wavelength-modulation-spectroscopy"},{"display_name":"laser absorption spectroscopy","id":"laser-absorption-spectroscopy","score":0.5605,"url":"https://openalex.org/keywords/laser-absorption-spectroscopy"},{"display_name":"line intensities","id":"line-intensity","score":0.2023,"url":"https://openalex.org/keywords/line-intensity"},{"display_name":"laser spectroscopy","id":"laser-spectroscopy","score":0.2287,"url":"https://openalex.org/keywords/laser-spectroscopy"},{"display_name":"gas concentration measurement","id":"gas-concentration-measurement","score":0.3286,"url":"https://openalex.org/keywords/gas-concentration-measurement"},{"display_name":"combustion diagnostics","id":"combustion-diagnostics","score":0.2449,"url":"https://openalex.org/keywords/combustion-diagnostics"},{"display_name":"differential absorption lidar","id":"differential-absorption-lidar","score":0.3154,"url":"https://openalex.org/keywords/differential-absorption-lidar"},{"display_name":"absorption spectroscopy","id":"absorption-spectroscopy","score":0.2135,"url":"https://openalex.org/keywords/absorption-spectroscopy"},{"display_name":"infrared absorption spectroscopy","id":"infrared-absorption-spectroscopy","score":0.2378,"url":"https://openalex.org/keywords/infrared-absorption-spectroscopy"},{"display_name":"terahertz quantum cascade lasers","id":"terahertz-quantum-cascade-lasers","score":0.3711,"url":"https://openalex.org/keywords/terahertz-quantum-cascade-lasers"},{"display_name":"self-broadening","id":"self-broadening","score":0.7757,"url":"https://openalex.org/keywords/self-broadening"},{"display_name":"rovibrational spectra","id":"vibration-rotation-spectra","score":0.2245,"url":"https://openalex.org/keywords/vibration-rotation-spectra"},{"display_name":"rovibrational transitions","id":"rovibrational-transitions","score":0.3726,"url":"https://openalex.org/keywords/rovibrational-transitions"},{"display_name":"line positions","id":"line-positions","score":0.5811,"url":"https://openalex.org/keywords/line-positions"},{"display_name":"quartz-enhanced photoacoustic spectroscopy","id":"quartz-enhanced-photoacoustic-spectroscopy","score":0.9714,"url":"https://openalex.org/keywords/quartz-enhanced-photoacoustic-spectroscopy"},{"display_name":"dual-comb spectroscopy","id":"dual-comb-spectroscopy","score":0.3776,"url":"https://openalex.org/keywords/dual-comb-spectroscopy"},{"display_name":"line strengths","id":"line-strengths","score":0.3173,"url":"https://openalex.org/keywords/line-strengths"},{"display_name":"Fourier transform spectroscopy","id":"fourier-transform-spectroscopy","score":0.2252,"url":"https://openalex.org/keywords/fourier-transform-spectroscopy"}],"legacy_keywords":["Spectroscopic Databases","Terahertz Quantum-Cascade Lasers","Infrared Laser Absorption","Gas Sensing","Photoacoustic Spectroscopy","High-Temperature Molecular Spectroscopy","Diode Laser Absorption","Quantum Cascade Laser Frequency Combs","Breath Analysis","Cavity Ring-Down Spectroscopy"],"openalex_id":"https://openalex.org/T11111","source_created_date":"2024-01-23T15:27:09","source_updated_date":"2026-10-17T03:02:00","subfield_id":"1607","url":"/topics/T11111","works_api_url":"https://api.openalex.org/works?filter=topics.id:T11111","works_count":83050,"label":"Spectroscopy and Laser Applications","provider":"openalex","revision":"c64c32ceb655a175","taxonomy_revision":"f050b5d4780b1289","title":"Spectroscopy and Laser Applications","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"36174791757139165","address_version":"morton4x16-v1","coordinates":[3,16,1607,11111],"answer_status":"Directory metadata; local answer requires separate source review","truth_status":"Subject descriptor, not a factual answer or a demonstrated knowledge gap","reviewed_answer":null}