Er:Yb-doped waveguide laser fabricated by femtosecond laser pulses

Abstract

Laser action is demonstrated in a 20-mm-long waveguide fabricated on an Er:Yb-doped phosphate glass by femtosecond laser pulses. An output power of 1.7 mW with approximately 300 mW of pump power coupled into the waveguide is obtained at 1533.5 nm. Waveguides are manufactured with the 520-nm radiation from a frequency-doubled, diode-pumped, cavity-dumped Yb:glass laser operating at a 166-KHz repetition rate, with a 300-fs pulse duration.

Direct Writing in Polymers with Femtosecond Laser Pulses: Physics and Applications

“…A new approach for the local modification of transparent materials through nonlinear optical processes has been investigated due to extraordinarily high peak intensities of short pulses. A variety of materials including metals, dielectrics, polymers, and semiconductors have been successfully processed by the use of fs pulses [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. Bulk refractive index change in transparent materials is found to be useful in applications of waveguides.…”

Ultrafast Laser Pulses for Structuring Materials at Micro/Nano Scale: From Waveguides to Superhydrophobic Surfaces

“…This approach has enabled the modification of a wide range of materials at the surface and in the bulk with micro/nanometric resolution, with or without minimal undesirable features, such as debris and a heat-affected zone surrounding the focal volume. The several possible applications already demonstrated-and, in fact, currently being used in new technologies including role drilling [142], fabrication of microfluidic channels [143][144][145], optical storage devices [24,27,146] and waveguides [2,[147][148][149]-give strength to the popularization of this approach for material modification and fabrication, especially because it is a low-cost and versatile alternative to traditional methods.…”

Fabricating waveguide Bragg gratings (WBGs) in bulk materials using ultrashort laser pulses

“…Taccheo et al obtained the first femtosecond laserwritten WGL with 1.7 mW output power at 1533.5 nm using a FBG-waveguide-FBG arrangement [78]. True monolithic WGL operation was subsequently demonstrated by Marshall et al in a DFB configuration [6,30].…”