Image-focusing optical system for ultraviolet laser

Details Image-focusing optical system for ultraviolet laser Image-focusing optical system for ultraviolet laser

1998-03-18

2000-05-09

Chang, Audrey

Optical: systems and elements

Having significant infrared or ultraviolet property

Having ultraviolet absorbing or shielding property

359350, 359355, 355 53, G02B 520, G02B 1314, G02B 2742, F21V 906

Patent

active

06061174&

ABSTRACT:
An optical member is provided for use in an image-focusing optical system for guiding light having a wavelength shorter than about 300 nm. The optical member includes a calcium fluoride crystal having a sodium concentration of less than about 0.2 ppm.

REFERENCES:
patent: 5260578 (1993-11-01), Bliton et al.
patent: 5515207 (1996-05-01), Foo
patent: 5631522 (1997-05-01), Scott et al.
Birsoy, R., Coloring of Synthetic Fluorite, Phys. Stat. Sol. (A) 62, 169 (1980).
Cope, D. R., UV Lasers Require Tough Transmissive Materials, Laser Focus World, Jan. 1992.
Krajnovich, D. J., Testing of the Durability of Single-Crystal Calcium Fluoride With and Without Antireflection Coatings For Use With High-Power KrF Excimer Lasers, Applied Optics, vol. 31, No. 28, Oct. 1, 1992.

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