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A design of technologically feasible hole-assisted silica fibers with all-normal dispersion was proposed and optimized for maximum dispersion located, respectively, at 1.55 and 1.97 $\mu\text{m} $. Such fibers allow for efficient supercontinuum generation using erbium- or thulium-doped fs fiber laser as a pump. Nonlinear simulations accounting for fiber loss were performed to find optimum pumping...
Here we describe our first results using a new waveguide material: Ge11As22Se67 whose nonlinearity is about 4 times larger than As2S3 and which has allowed us to achieve nonlinear parameters in air-clad rib waveguides in excess of 26000 W-1km-1. Rib waveguides were fabricated by dry etching 340 nm deep into 680 nm thick glass films deposited by thermal evaporation onto an oxidized silicon wafer. This...
We demonstrate a broadband supercontinuum (SC) generation that covers an optical spectrum from 1300 to 2000 nm with output power of 1.3 W. The SC generation is realized using a fiber ring cavity that mainly consists of erbium-ytterbium-doped fiber pumped by multimode 975-nm pump lasers, and highly nonlinear fiber (HNLF). Moreover, we investigate the role of four-wave mixing (FWM) in the SC generation...
We investigate broad-band CARS spectroscopy in supercontinuum optical trap. Methods for suppressing or smoothing non-resonant background are demonstrated.
We report a CW supercontinuum pumped at 1 mum which extends short of the pump wavelength to 0.6 mum. Four-wave mixing is believed to be a major process for the short wavelength generation.
We demonstrate a cascaded nonlinear process in an all-fibre monolithic device. Four wave mixing followed by modulation instability generates bright single-mode visible supercontinuum from an infrared source in a single-mode photonic crystal fibre.
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