title: Laser emission from diode-pumped Nd:YAG ceramic waveguide lasers realized by direct femtosecond-laser writing technique.
abstract: We report on realization of buried waveguides in Nd:YAG ceramic media by direct femtosecond-laser writing technique and investigate the waveguides laser emission characteristics under the pump with fiber-coupled diode lasers. Laser pulses at 1.06 μm with energy of 2.8 mJ for the pump with pulses of 13.1-mJ energy and continuous-wave output power of 0.49 W with overall optical efficiency of 0.13 were obtained from a 100-μm diameter circular cladding waveguide realized in a 0.7-at.% Nd:YAG ceramic. A circular waveguide of 50-μm diameter yielded laser pulses at 1.3 μm with 1.2-mJ energy.
authors.forename: Gabriela
authors.initials: G
authors.lastname: Salamu
authors.forename: Florin
authors.initials: F
authors.lastname: Jipa
authors.forename: Marian
authors.initials: M
authors.lastname: Zamfirescu
authors.forename: Nicolaie
authors.initials: N
authors.lastname: Pavel