Mid-infrared characterization of solution-processed As2S3 chalcogenide glass waveguides. Academic Article uri icon

abstract

  • An etch-free and cost-effective deposition and patterning method to fabricate mid-infrared chalcogenide glass waveguides for chemical sensing applications is introduced. As(2)S(3) raised strip optical waveguides are produced by casting a liquid solution of As(2)S(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 (lambda = 4.8 microm) into the 40 microm wide by 10 microm 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.

published proceedings

  • Opt Express

author list (cited authors)

  • Tsay, C., Mujagi, E., Madsen, C. K., Gmachl, C. F., & Arnold, C. B.

citation count

  • 68

complete list of authors

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

publication date

  • July 2010