Diagnostic techniques and UV-induced degradation of the mirrors used in the Orsay storage ring free-electron laser
Journal Article
·
· Appl. Opt.; (United States)
Due to its low gain, the Orsay storage ring free-electron laser necessitates the use of high reflectivity mirrors. Three techniques for measuring the mirror losses are presented, based on cavity decay time measurements using either an external laser, the synchrotron radiation stored in the cavity, or the free-electron laser itself. The high signal-to-noise ratio allowed the detection of loss variations as low as 10/sup -7//sec/sup 1//sup ///sup 2/. From these diagnostics three distinct processes of UV-induced degradation of TiO/sub 2//SiO/sub 2/ dielectric mirrors were identified. One was a surface absorption of the upper SiO/sub 2/-air interface; it was not affected by annealing. The other two corresponded to a volume absorption of the layers which completely recovered after annealing.
- Research Organization:
- Service de Photophysique, Departement de Physico-Chimie, Centre d'Etudes Nucleaires de Saclay, 91191 Gifsur-Yvette, France
- OSTI ID:
- 5382749
- Journal Information:
- Appl. Opt.; (United States), Journal Name: Appl. Opt.; (United States) Vol. 24:17; ISSN APOPA
- Country of Publication:
- United States
- Language:
- English
Similar Records
uv and vuv degradation of very high reflectivity mirrors for use in a storage ring free electron laser
Cavity-mirror degradation in the deep-UV FEL
Ring laser gyro mirror substrate investigation. Final report, 28 April 1977--28 January 1978
Technical Report
·
Sun May 01 00:00:00 EDT 1983
·
OSTI ID:7022360
Cavity-mirror degradation in the deep-UV FEL
Conference
·
Sat Dec 30 23:00:00 EST 1995
·
OSTI ID:238663
Ring laser gyro mirror substrate investigation. Final report, 28 April 1977--28 January 1978
Technical Report
·
Mon May 01 00:00:00 EDT 1978
·
OSTI ID:5581002
Related Subjects
42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
43 PARTICLE ACCELERATORS
430400 -- Particle Accelerators-- Storage Rings
ACCELERATORS
ANNEALING
CHALCOGENIDES
CYCLIC ACCELERATORS
ENERGY
ENERGY LOSSES
FREE ELECTRON LASERS
HEAT TREATMENTS
LASER CAVITIES
LASER MIRRORS
LASERS
LOSSES
MIRRORS
OPTICAL PROPERTIES
ORSAY SYNCHROTRON
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
Q-VALUE
RADIATION EFFECTS
REFLECTIVITY
SIGNAL-TO-NOISE RATIO
SILICON COMPOUNDS
SILICON OXIDES
SURFACE PROPERTIES
SYNCHROTRONS
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
420300* -- Engineering-- Lasers-- (-1989)
43 PARTICLE ACCELERATORS
430400 -- Particle Accelerators-- Storage Rings
ACCELERATORS
ANNEALING
CHALCOGENIDES
CYCLIC ACCELERATORS
ENERGY
ENERGY LOSSES
FREE ELECTRON LASERS
HEAT TREATMENTS
LASER CAVITIES
LASER MIRRORS
LASERS
LOSSES
MIRRORS
OPTICAL PROPERTIES
ORSAY SYNCHROTRON
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
Q-VALUE
RADIATION EFFECTS
REFLECTIVITY
SIGNAL-TO-NOISE RATIO
SILICON COMPOUNDS
SILICON OXIDES
SURFACE PROPERTIES
SYNCHROTRONS
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS