Wavelength (Or Frequency) Conversion of the GaSe-Integrated Microfiber (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Wavelength (Or Frequency) Conversion of the GaSe-Integrated Microfiber

Caption

(a) Schematic of the operations of wavelength conversion due to the SHG and SFG from the GaSe-integrated microfiber. When pumped by two continuous-wave laser with the wavelengths of λ1 and λ2, there are three light signals with new generated wavelengths [λ1/2, λ2/2 and λ3=λ1λ2/(λ1+λ2)] via second-order nonlinear optical effects. Top inset shows the energy diagrams of the SHG and SFG in the fiber device. (b) Wavelength-conversion spectra from the microfiber with and without GaSe integration when pumped by a pulsed laser 1550 nm, showing the SHG peak at 775 nm. In comparison, the SHG intensity is enhanced by more than four orders of magnitude after GaSe integration. (c) Spectral evolutions of SHG1, SHG2 and SFG when pumped by a 1310 nm DFB laser and a tunable laser (Pump-2) varying the wavelength in the range from 1500 nm to 1620 nm.

Credit

Biqiang Jiang, Zhen Hao, Yafei Ji, Yueguo Hou, Ruixuan Yi, Dong Mao, Xuetao Gan and Jianlin Zhao

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