title: High-gain optical waveguide amplifier based on proton beam writing of Nd:YAG crystal.
abstract: We report on an optical amplifier based on a Nd:YAG channel waveguide, which was fabricated by proton beam writing. Under the pumping of a continuous wave laser, the high-gain optical amplifications at single wavelength of 1064 nm and wavelength band of 1300 nm -1360 nm were obtained. The maximum gain was 24 dB/cm at 1064 nm and 6 dB/cm at 1319 nm, respectively. This work paves a way to apply proton beam written Nd:YAG waveguides as integrated optical amplifiers for the efficient amplification.
authors.forename: Yang
authors.initials: Y
authors.lastname: Tan
authors.forename: Zhen
authors.initials: Z
authors.lastname: Shang
authors.forename: Sudheer Kumar
authors.initials: SK
authors.lastname: Vanga
authors.forename: Andrew A
authors.initials: AA
authors.lastname: Bettiol
authors.forename: Feng
authors.initials: F
authors.lastname: Chen