Optics: measuring and testing – By dispersed light spectroscopy – With sample excitation
Reexamination Certificate
2007-08-14
2007-08-14
Evans, F. L. (Department: 2877)
Optics: measuring and testing
By dispersed light spectroscopy
With sample excitation
C250S458100
Reexamination Certificate
active
10527850
ABSTRACT:
The method tests the suitability of an optical material having a radiation-induced absorption, especially of an alkali or alkaline earth halide, for production of an optical element exposed to high-energy irradiation. The method includes pre-irradiating the optical material with laser radiation until rapid damage induced in the optical material with the laser radiation is saturated; subsequently measuring fluorescence of the optical material during and/or immediately after irradiating the optical material with excitation radiation and determining the non-intrinsic fluorescence and intrinsic fluorescence present in the measured fluorescence. Suitability may be preferably determined according to a ratio of the amount of non-intrinsic fluorescence to intrinsic fluorescence. A device for performing the method including a barrier device for blocking scattered excitation radiation is also provided.
REFERENCES:
patent: 3824402 (1974-07-01), Mullaney et al.
patent: 2001/0043331 (2001-11-01), Rebhan
patent: 27 47 409 (1978-04-01), None
patent: 28 00 415 (1978-07-01), None
patent: WO 98/08775 (1998-03-01), None
patent: 02/48694 (2002-06-01), None
W. Triebel et al: “Evaluation of Fused Silica . . . ” Proceesings of SPIE vol. 4103, 2000, pp. 1-11.
M. Mizuguchi et al: Generation of Optical Absorption Bands . . . J Vac. Sci. Tehnol. A 16(5) Sep./Oct. 1998, pp. 3052-3057.
M. Mizuguchi et al: “Time-Resolved Photoluminescence for . . . ” J. Opt. Soc. Am. B. vol. 16, No. 7, Jul. 1999, pp. 1153-1159.
K. Mann et al: “Optical Metrology in the VUV and . . . ” Proceedings of SPIE vol. 4779, 2002, pp. 31-40.
Alkemper Jochen
Martin Regina
Muehlig Christian
Triebel Wolfgang
Evans F. L.
Schott AG
Striker Michael J.
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