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X-ray induced absorption of high-purity sapphire and investigation of the origin of the residual absorption at 1064 nm

Identifieur interne : 00C055 ( Main/Exploration ); précédent : 00C054; suivant : 00C056

X-ray induced absorption of high-purity sapphire and investigation of the origin of the residual absorption at 1064 nm

Auteurs : F. Benabid [Australie] ; M. Notcutt [Australie] ; V. Loriette [France] ; L. Ju [Australie] ; D. G. Blair [Australie]

Source :

Journal of physics. D. Applied physics [ 0022-3727 ] ; 2000.

RBID : Pascal:00-0161128

Descripteurs français

Pascal (Inist)
- Etude expérimentale, Effet physique rayonnement, Rayon X, Spectre absorption, Spectre UV visible, Spectre IR, Défaut complexe, Lacune, Recuit, Endommagement, Aluminium oxyde, Saphir, Al2O3, Al O, 7820C.

English descriptors

KwdEn :
- Absorption spectra, Aluminium oxides, Annealing, Complex defect, Damage, Experimental study, Infrared spectra, Physical radiation effects, Sapphire, Ultraviolet visible spectrum, Vacancies, X radiation.

Abstract

We report a set of optical absorption measurements on x-irradiated high-purity sapphire. The results of the photothermal deflection absorption measurements at 1064 nm show an increase of the absorption at the x-irradiated areas. The x-ray damage recovery is achieved through annealing, where the absorption level at 1064 nm is brought from an average level of ∼80 ppm cm^-1 to ∼24 ppm cm^-1, UV-Vis spectroscopy results suggest that the residual absorption at 1064 nm is due to complex clusters of Ti and Fe ions and oxygen vacancies. We suggest that a further reduction of Ti and Fe in sapphire (<0. I ppm) as well as oxygen vacancies (through post growth oxidizing annealing) would further reduce the absorption. Moreover, the absorption level of 20 ppm cm^-1 remains within the requirements of the second generation laser interferometric gravitational-wave detectors.

Affiliations:

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Le document en format XML

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<front><div type="abstract" xml:lang="en">We report a set of optical absorption measurements on x-irradiated high-purity sapphire. The results of the photothermal deflection absorption measurements at 1064 nm show an increase of the absorption at the x-irradiated areas. The x-ray damage recovery is achieved through annealing, where the absorption level at 1064 nm is brought from an average level of ∼80 ppm cm<sup>-1</sup>
 to ∼24 ppm cm<sup>-1</sup>
, UV-Vis spectroscopy results suggest that the residual absorption at 1064 nm is due to complex clusters of Ti and Fe ions and oxygen vacancies. We suggest that a further reduction of Ti and Fe in sapphire (<0. I ppm) as well as oxygen vacancies (through post growth oxidizing annealing) would further reduce the absorption. Moreover, the absorption level of 20 ppm cm<sup>-1</sup>
 remains within the requirements of the second generation laser interferometric gravitational-wave detectors.</div>
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X-ray induced absorption of high-purity sapphire and investigation of the origin of the residual absorption at 1064 nm

X-ray induced absorption of high-purity sapphire and investigation of the origin of the residual absorption at 1064 nm

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri