Title:
透光性セラミックス体及びその製造方法
Document Type and Number:
Japanese Patent JP4605729
Kind Code:
B2
Abstract:
An object of the present invention is to provide a transparent ceramics which exhibits favorable slope efficiency well comparable to that of a single crystal when employed in solid lasers, yet having a uniform quality and internally free from pores, foreign matters, or granular structures. Another object of the present invention is to provide a production method therefor. The above problems have been overcome by a transparent YAG-ceramics (YAG: Y3Al5O12) the physical properties thereof is improved by doping a metallic element, provided that the concentration of the doped metallic elements is in a range of from 0.1 to 20% by weight, that the concentration of nitrogen is 500 ppm or lower, that said ceramics has pores and foreign matters accounting for less than 100 mm<2 >per 100 cm<3 >as expressed by their projected area, and that it has an internal transmittance for visible radiations of 50 %/cm of higher. The metallic element for doping the YAG-ceramic is Nd.
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Inventors:
Tatsuhiro Sato
Yoshimasa Yoshimasa
Akira Fujinoki
Yoshimasa Yoshimasa
Akira Fujinoki
Application Number:
JP2001011923A
Publication Date:
January 05, 2011
Filing Date:
January 19, 2001
Export Citation:
Assignee:
Shin-Etsu Quartz Products Co., Ltd.
International Classes:
C04B35/44; C03B19/06; C03B19/12; C03C1/00; C03C3/12; C03C4/00; C04B35/653; H01S3/16
Domestic Patent References:
| JP50090598A | ||||
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| JP11255559A | ||||
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Foreign References:
| EP0067521B1 | ||||
| US4013501 |
Attorney, Agent or Firm:
Shoji Ishihara
Shinsuke Ishihara
Shinsuke Ishihara