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High-gain optical waveguide amplifier based on proton beam writing of Nd:YAG crystal

2015; Optica Publishing Group; Volume: 23; Issue: 11 Linguagem: Inglês

10.1364/oe.23.014612

1094-4087

Yang Tan, Zhen Shang, Sudheer Kumar Vanga, Andrew A. Bettiol, Feng Chen,

Advanced Fiber Laser Technologies

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.