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Published on: November 30, 2012
UV waveguides light fabricated in fluoropolymer CYTOP by femtosecond laser direct writing
Yasutaka Hanada1, Koji Sugioka, Katsumi Midorikawa
1RIKEN-Advanced Science Institute, Wako, Saitama, Japan. y-hanada@riken.jp
Optics Express
|February 23, 2010
Abstract:
We have fabricated optical waveguides inside the UV-transparent polymer, CYTOP, by femtosecond laser direct writing for propagating UV light in biochip applications. Femtosecond laser irradiation is estimated to increase the refractive index of CYTOP by 1.7 x 10(-3) due to partial bond breaking in CYTOP. The waveguide in CYTOP has propagation losses of 0.49, 0.77, and 0.91 dB/cm at wavelengths of 632.8, 355, and 266 nm, respectively.
