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A new setup for optical measurements under controlled environment
Dmitrii Moldarev1, Kristina Komander1, Radek Holeňák1
1Department of Physics and Astronomy, Uppsala University, Box 516, 751 20 Uppsala, Sweden.
The Review of Scientific Instruments
|April 4, 2023
Summary
A new instrument analyzes material optical properties in varied gas environments and temperatures. It enables studies on photochromic thin films and hydrogen absorption in vanadium films.
Area of Science:
- Materials Science
- Optical Physics
- Analytical Chemistry
Background:
- Understanding material optical properties under varying environmental conditions is crucial for developing new technologies.
- Existing methods may lack the flexibility to study materials in controlled gaseous environments at different temperatures.
Purpose of the Study:
- To introduce a novel analytical instrument designed for in-situ optical characterization of materials.
- To demonstrate the instrument's capability in studying dynamic optical property changes in response to environmental stimuli.
Main Methods:
- The instrument features a vacuum chamber with precise temperature, pressure, and gas control.
- Optical transmission and pump-probe spectroscopy are enabled via external setups and view ports.
- Residual gas analysis monitors the chamber's atmosphere during experiments.
Main Results:
- Photodarkening and bleaching kinetics of yttrium hydride thin films were studied under ultra-high vacuum, correlating optical changes with gas pressure.
- Optical property alterations in a 50 nm vanadium film were investigated during hydrogen absorption.
Conclusions:
- The developed instrument is effective for in-situ optical analysis of materials in controlled gas environments.
- The system provides valuable insights into material behavior under specific atmospheric conditions, crucial for materials development.
