Low vibration high numerical aperture automated variable temperature Raman microscope
Abstract
Raman micro-spectroscopy is well suited for studying a variety of properties and has been applied to a wide range of areas. Combined with tuneable temperature, Raman spectra can offer even more insights into the properties of materials. However, previous designs of variable temperature Raman microscopes have made it extremely challenging to measure samples with low signal levels due to thermal and positional instabilities as well as low collection efficiencies. Thus contemporary Raman microscope has found limited applicability to probing the subtle physics involved in phase transitions and hysteresis. This paper describes a new design of a closed-cycle, Raman microscope with full polarization rotation. High collection efficiency, thermal stability, and mechanical stability are ensured by both deliberate optical, cryogenic, and mechanical design. Measurements on two samples, Bi2Se3 and V2O3, which are challenging due to low thermal conductivities, low signal levels, and/or hysteretic effects, are measured with previously undemonstrated temperature resolution.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 01, 2016
- Source ID
- 10.1063/1.4944559
Entities
People
- Anjan A. Reijnders
- Christian Urban
- Gavin B. Osterhoudt
- Genda Gu
- Ilya Valmianski
- Isaac Henslee
- John Schneeloch
- Juan Gabriel RamÃrez
- Kenneth S. Burch
- Ruidan Zhong
- Yao Tian
Organizations
- Air Force Office of Scientific Research
- Boston College
- Brookhaven National Laboratory
- National Science Foundation
- Natural Sciences and Engineering Research Council
- United States Department of Energy
- University of California
- University of Toronto