Infrared waveguide fabrications with an E-beam evaporated chalcogenide glass film

Xiaoming Yang, Yaping Zhang, Ahad A. Syed

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Chalcogenide glasses have a variety of unique optical properties due to the intrinsic structural flexibility and bonds metastability. They are desirable materials for many applications, such as infrared communication sensors, holographic grating, optical imaging, and ultrafast nonlinear optic devices. Here, we introduce a novel electron-beam evaporation process to deposit the good quality arsenic trisulfide (As2S3) films and then the As2S3 films were used to fabricate the As2S3 waveguides with three approaches. The first method is photoresist lift-off. Because of the restriction of thermal budget of photoresist, the As2S3 film must be deposited at the room temperature. The second one is the silicon dioxide lift-off process on sapphire substrates, in which the As2S3 film could be evaporated at a high temperature (>180 °C) for better film quality. The third one is the plasma etching process with a metal protective thin layer in the pattern development process.
Original languageEnglish (US)
Pages (from-to)548-555
Number of pages8
JournalJournal of Modern Optics
Volume62
Issue number7
DOIs
StatePublished - Feb 23 2015

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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