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Optica Publishing Group
  • 2015 European Conference on Lasers and Electro-Optics - European Quantum Electronics Conference
  • (Optica Publishing Group, 2015),
  • paper CA_P_29

Diode-Pumped Laser Emission from Depressed Cladding Waveguides Inscribed in Nd-doped Media by Femtosecond Laser Writing Technique

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Abstract

Femtosecond- (fs-) laser pulses are recognized nowadays as an important tool for realizing optical devices in many materials. A change of the refractive index appears in the region were the laser pulse interacts with the material. Based on this effect, waveguides were inscribed in various laser media, like Nd:Y3Al5O12 (Nd:YAG) and Yb:YAG, Nd:YVO4 and Nd:GdVO4, Pr:YLiF4 and Pr:SrAl12O19, or mid-infrared emitting Tm and Cr:ZnS media [1,2]. Continuous-wave (cw) emission was obtained from these waveguides, using in principal the pump with Ti:sapphire lasers. In this work we report on realization of depressed cladding waveguides in Nd:YAG (single crystals and ceramics) and in Nd:YVO4 by a classical (step-by-step translation) fs-laser writing method; furthermore, a new (helical moving of the medium) inscribing technique is proposed. Cw laser emission at 1.06 µm was achieved from these waveguides under the pump with a fiber-coupled diode laser.

© 2015 IEEE

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