Infrared tissue imaging at on-the-spot laser delivery using an all-optical-waveguide transmitting system
Proceedings IEEE International Symposium on Biomedical Imaging - Trang 281-284
Tóm tắt
We present experimental results on mid-infrared thermal imaging of micro-scale tissue area irradiated by an all-optical-waveguide laser delivery system. The infrared transmitting system is based on a novel and simple laser delivery technique that includes two key optical elements: a grazing-incidence-based uncoated hollow taper used for direct infrared laser-to-fiber coupling, and a tissue-activated optical fiber probe with a specially shaped tip. The lens-free all-optical-waveguide transmitting system provides on-the-spot laser delivery into a precise micro-scale tissue area. When an Er:YAG (/spl lambda/=2.94 /spl mu/m) laser is used as a mid-infrared laser source, we obtain infrared thermal images from a small-size tissue area and a single hair.
Từ khóa
#Infrared imaging #Optical imaging #Free electron lasers #Fiber lasers #Laser modes #Biomedical optical imaging #Optical coupling #Optical sensors #Optical fibers #Laser theoryTài liệu tham khảo
10.1063/1.1150042
10.1063/1.123966
10.1364/AO.39.003192
10.1109/3.853551
ilev, 2001, Evanescent wave delivery to a precise tissue area using fiber-optic tips, Attenuation measurement of infrared optical fibers using a hollow-taper-based coupling method SPIE, 4253, 161
holst, 2001, Infrared Imaging Systems: Design, Analysis, Modeling and Testing, Proc SPIE, 4372
sanghera, 1998, Infrared Fiber Optics