Initial scientific uses of coherent synchrotron radiation inelectron storage rings
The production of stable, high power, coherent synchrotron radiation at sub-terahertz frequency at the electron storage ring BESSY opens a new region in the electromagnetic spectrum to explore physical properties of materials. Just as conventional synchrotron radiation has been a boon to x-ray science, coherent synchrotron radiation may lead to many new innovations and discoveries in THz physics. With this new accelerator-based radiation source we have been able to extend traditional infrared measurements down into the experimentally poorly accessible sub-THz frequency range. The feasibility of using the coherent synchrotron radiation in scientific applications was demonstrated in a series of experiments: We investigated shallow single acceptor transitions in stressed and unstressed Ge:Ga by means of photoconductance measurements below 1 THz. We have directly measured the Josephson plasma resonance in optimally doped Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8} for the first time and finally we succeeded to confine the sub-THz radiation for spectral near-field imaging on biological samples such as leaves and human teeth.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE; Land Berlin
- DOE Contract Number:
- DE-AC02-05CH11231
- OSTI ID:
- 860775
- Report Number(s):
- LBNL-56658; R&D Project: AJ04MA; BnR: YN0100000; TRN: US0504961
- Journal Information:
- International Committee for Future Accelerators Beam Dynamics Newsletter, Vol. 35; Related Information: Journal Publication Date: 12/2004
- Country of Publication:
- United States
- Language:
- English
Similar Records
Optimizing ring-based CSR sources
Emission of coherent THz-radiation from superconductors.
Related Subjects
36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ELECTRONS
FREQUENCY RANGE
PHYSICAL PROPERTIES
PHYSICS
PRODUCTION
RADIATION SOURCES
RADIATIONS
RESONANCE
STORAGE RINGS
SYNCHROTRON RADIATION
Terahertz Coherent Superconductor Semiconductor imagingteeth