№ files_lp_4_process_2_73123
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Scientific article describing the design, fabrication, and optical validation of substrate-transferred crystalline and hybrid GaAs/AlGaAs interference coatings enabling ultralow-loss mid-infrared mirrors and optical cavities with finesse exceeding 400 000 for high-precision spectroscopic measurements.
Year: Not specified
Field: Optical physics; mid-infrared spectroscopy
Topic: Low-loss optical mirrors and high-finesse optical cavities
Document type: Scientific research article
Authors: G.-W. Truong; L. W. Perner; D. M. Bailey; G. Winkler; S. B. Cataño-Lopez; V. J. Wittwer; T. Südmeyer; C. Nguyen; D. Follman; A. J. Fleisher; O. H. Heckl; G. D. Cole
Affiliated institutions: Thorlabs Crystalline Solutions; University of Vienna; Vienna Doctoral School in Physics; National Institute of Standards and Technology; Université de Neuchâtel
Research focus: Mid-infrared interference coatings based on GaAs/AlGaAs multilayers
Key technologies: Molecular beam epitaxy; substrate-transferred crystalline coatings; ion-beam sputtered coatings
Spectral region: Mid-infrared near 4.5 µm
Experimental systems: Optical resonators and cavity ring-down spectrometer
Materials: GaAs; Al0.92Ga0.08As; silicon substrates
Reported performance: Cavity finesse from 200 000 to over 400 000 with excess optical losses below 5 ppm
Application domains: Trace gas sensing; precision spectroscopy; atmospheric and environmental monitoring; breath-gas analysis; process gas monitoring
Price: 8 / 10 USD
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