Mid-infrared characterization of solution-processed As2S 3 chalcogenide glass waveguides

Candice Tsay, Elvis Mujagić, Christi K. Madsen, Claire F. Gmachl, Craig B. Arnold

Research output: Contribution to journalArticlepeer-review

76 Scopus citations


An etch-free and cost-effective deposition and patterning method to fabricate mid-infrared chalcogenide glass waveguides for chemical sensing applications is introduced. AS2S3 raised strip optical waveguides are produced by casting a liquid solution of AS2S 3 glass in capillary channel molds formed by soft lithography. Mid-IR transmission is characterized by coupling the output of a quantum cascade (QC) laser (λ = 4.8 μm) into the 40 μm wide by 10 μm thick multi-mode waveguides. Loss as low as 4.5 dB/cm is achieved using suitable substrate materials and post-processing. Optical absorption and surface roughness measurements indicate that the solution-processed films are of sufficient quality for optical devices and are promising for further development of waveguide-based mid-IR elements.

Original languageEnglish (US)
Pages (from-to)15523-15530
Number of pages8
JournalOptics Express
Issue number15
StatePublished - Jul 19 2010

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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