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In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation
Published on: May 27, 2013
Second and third harmonics and flattened supercontinuum generation in tellurite microstructured fibers
Guanshi Qin1, Meisong Liao, Chitrarekha Chaudhari
1Research Center for Advanced Photon Technology, Toyota Technological Institute, 2-12-1 Hisakata, Tempaku, Nagoya 468-8511, Japan. gsqin@yahoo.com
Optics Letters
|July 29, 2010
Summary
This study demonstrates second and third harmonic generation in tellurite microstructured fibers. Enhanced nonlinear coefficients boost harmonic intensities and achieve broad supercontinuum generation.
Area of Science:
- Nonlinear optics
- Materials science
- Photonics
Background:
- Tellurite microstructured fibers offer unique nonlinear optical properties.
- Femtosecond fiber lasers are crucial for generating nonlinear effects.
Purpose of the Study:
- To demonstrate second and third harmonic generation in tellurite microstructured fibers.
- To investigate supercontinuum generation and its dependence on fiber properties.
Main Methods:
- Pumping tellurite microstructured fibers with a 1557 nm femtosecond fiber laser.
- Characterizing second and third harmonic generation.
- Analyzing supercontinuum spectra and flatness.
Main Results:
- First demonstration of second and third harmonic generation in tellurite microstructured fibers.
- Harmonic intensities enhanced by increasing the nonlinear coefficient.
- Supercontinuum light spanning 470 nm to 2400 nm achieved with a 2.7 micrometer core diameter fiber.
- Investigated the effect of fiber-core diameter on supercontinuum flatness.
Conclusions:
- Tellurite microstructured fibers are effective for harmonic generation and supercontinuum production.
- Fiber nonlinear coefficient and core diameter are key parameters for optimizing optical outputs.
