High-Luminance White-Light Point Source Using Ce,Sm : YAG Double-Clad Crystal Fiber

被引：12

作者：

Lin, Yen-Sheng ^{[1
]}

Cheng, Tzu-Chieh ^{[1
]}

Tsai, Chien-Chung ^{[1
]}

Hsu, Kuang-Yu ^{[1
]}

Jheng, Dong-Yo ^{[1
]}

Lo, Chia-Yao ^{[2
]}

Yeh, Ping-Hui S. ^{[3
,4
]}

Huang, Sheng-Lung ^{[5
]}

机构：

[1] Natl Taiwan Univ, Grad Inst Photon & Optoelect, Taipei 106, Taiwan

[2] Natl Taiwan Ocean Univ, Chilung 202, Taiwan

[3] Natl Taiwan Univ Sci & Technol, Dept Elect Engn, Taipei 106, Taiwan

[4] Natl Taiwan Univ Sci & Technol, Grad Inst Electroopt Engn, Taipei 106, Taiwan

[5] Natl Taiwan Univ, Dept Elect Engn, Taipei 106, Taiwan

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2010年 / 22卷 / 20期

关键词：

Broadband light sources; crystal fibers; optical coherence tomography; optical fiber devices; EMITTING-DIODES; BRIGHTNESS; PHOSPHOR; SM;

D O I：

10.1109/LPT.2010.2064293

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Ce and Sm ions codoped yttrium aluminum garnet (Ce, Sm : YAG) double-clad crystal fibers (DCFs) were successfully fabricated using the codrawing laser-heated pedestal growth method. At a pump wavelength of 446 nm, white-light point source was produced from a 10-mu m-core DCF. The amplified spontaneous emissions and the residual pump resulted in a directional high brightness point source. A luminance of 4.5 x 10(9) cd/m(2) was generated. The luminous flux of the point white light was 6.2 lm. When coupled to a 200-mu m-core multimode fiber, the output power and coupling efficiency were 4.8 mW and 36.8%, respectively. Point white-light sources are useful for biomedical endoscopic application and long-range directive illumination. The generated broadband yellow emission can also be served as the light source for optical coherence tomography system. Using the 91-nm yellow emission, an axial resolution of 1.5-mu m optical coherence tomography can be achieved for ultrahigh-resolution ocular and industrial applications.

引用

页码：1494 / 1496

页数：3

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