title: Tunable third-harmonic generation in a solid-core tellurite glass fiber.
abstract: A solid-core tellurite glass fiber with 1.8 dB/m loss at 1.55 μm was made by using the built-in casting preform fabrication method and rod-in-tube fiber drawing technique. Pumping a 10 cm fiber piece with picosecond pulses of 3-5×10(12) W/cm(2), 0.1% of the fundamental power limited by the coherence length of 0.3-5 μm was converted into visible third-harmonic power tunable over a broad near-IR wavelength ranging from 1500 to 1680 nm. Frequency conversion from the mid-IR to near-IR was found to be even more efficient due to the longer coherence lengths of 12-20 μm in the wavelength range of 2200-2500 nm.
authors: Center for Optical Technologies and Physics Department, Lehigh University, Bethlehem, Pennsylvania 18015, USA. aoxiang@opt.ac.cn
authors: Aoxiang
authors: A
authors: Lin
authors: Aleksandr
authors: A
authors: Ryasnyanskiy
authors: Jean
authors: J
authors: Toulouse
mesh_terms: D005898:Glass / Q000737:chemistry*; D007259:Infrared Rays; D055100:Optical Fibers; D055620:Optical Phenomena; D013691:Tellurium / Q000737:chemistry*
chemical_list: C026660:tellurous acid; D013691:Tellurium