Novel 1.8-µm-band light sources composed of thulium-doped fiber for in-vivo imaging

Junji Yoshida; Takeshi Segi; Keiji Kaneda

doi:10.1117/12.762773

7 February 2008 Novel 1.8-μm-band light sources composed of thulium-doped fiber for in vivo imaging

Junji Yoshida, Takeshi Segi, Keiji Kaneda

Proceedings Volume 6852, Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications VIII; 68520I (2008) https://doi.org/10.1117/12.762773
Event: SPIE BiOS, 2008, San Jose, California, United States

Abstract

We have developed a single mode fiber-light source at 1.8um band, which composes of thulium (Tm)-doped silica fiber and optical devices used in telecommunication fields. This laser can be operated as a laser and broadband light source selectively. The laser wavelength is tuned from 1765nm to 1812nm by adjusting an angle of a built-in band pass filter (BPF). A maximum output power is 115mW at 1812nm, in the case that pump power is 363mW. The broadband light source has a maximum power of 10mW, the peak wavelength of 1840nm and the full width at half maximum of 50nm. By using these light sources, we have succeeded in obtaining images of test target by observing reflected light through opaque liquid.

Citation Download Citation

Junji Yoshida, Takeshi Segi, and Keiji Kaneda "Novel 1.8-μm-band light sources composed of thulium-doped fiber for in vivo imaging", Proc. SPIE 6852, Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications VIII, 68520I (7 February 2008); https://doi.org/10.1117/12.762773

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