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Investigation of nonlinear optical properties of rhenium diselenide and its application as a femtosecond mode-locker 被引量:1
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作者 JINHO LEE KYUNGTAEK LEE +2 位作者 suhyoung kwon BUMSOO SHIN JU HAN LEE 《Photonics Research》 SCIE EI CSCD 2019年第9期984-993,共10页
We investigated the nonlinear optical properties of ReSe2. First, we measured the nonlinear absorption coefficient and the nonlinear refractive index of a ReSe2 thin film using open-aperture(OA) and closed-aperture(CA... We investigated the nonlinear optical properties of ReSe2. First, we measured the nonlinear absorption coefficient and the nonlinear refractive index of a ReSe2 thin film using open-aperture(OA) and closed-aperture(CA) Z-scan techniques. ReSe2 was shown to possess both saturable absorption and self-defocusing properties. The nonlinear absorption coefficient of ReSe2 was measured to be-5.67-0.35×103 cm^2∕GW, and its nonlinear refractive index was-2.81-0.13×10-2 cm^2∕GW at 1560 nm. Next, a fiberized saturable absorber(SA) based on ReSe2 was fabricated with a side-polished fiber platform and was tested as an ultrafast mode-locker capable of producing femtosecond pulses operating at a wavelength of 1560 nm. The estimated modulation depth and saturation power are 3.9% and 42 W, respectively, for the transverse electric mode, while they are 2.4% and 53 W for the transverse magnetic mode. Using the prepared SA, stable soliton pulses with a temporal width of 862 fs were produced from an erbium-doped fiber ring cavity. To the best of the authors’ knowledge, this is the first demonstration of using a ReSe2-based SA for femtosecond mode-locked pulse generation. 展开更多
关键词 Se INVESTIGATION of nonlinear optical properties of RHENIUM DISELENIDE and its application as a FEMTOSECOND mode-locker
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