Optical switching performance of thermally oxidized vanadium dioxide with an integrated thin film heater
Abstract
Optical switching performance of vanadium dioxide produced by thermal oxidation of vanadium is presented in this paper. A 100nm thick vanadium was oxidized under controlled conditions in a quartz tube furnace to produce approximately 200nm thick VO2. The substrate was appropriately coated on the front and back side to reduce reflection in the cold state, and an integrated thin film heater was fabricated to allow in-situ thermal cycling. Electrical measurements show a greater than three orders of magnitude change in resistivity during the phase transition. Optical measurements exhibit 70% transparency at 1500nm and about 15dB extinction across a wide spectral band between 1000nm and 3000nm. These results are used to show a huge optical bistability effect in VO2-based devices.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jun 28, 2021
- Source ID
- 10.1364/ome.430751
Entities
People
- Andrew Sarangan
- Gamini Ariyawansa
- Igor Anisimov
- Ilya Vitebskiy
Organizations
- Air Force Office of Scientific Research
- Air Force Research Laboratory
- University of Dayton