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Título
Femtosecond laser direct writing of few-mode depressed-cladding waveguide lasers
Autor(es)
Materia
Dielectric waveguides
Femtosecond laser writing
High power fiber lasers
Laser operation
Optical components
Optical feedback
Fecha de publicación
2019-10
Citación
Yuechen Jia, Ruiyun He, Javier R. Vázquez de Aldana, Hongliang Liu, and Feng Chen, "Femtosecond laser direct writing of few-mode depressed-cladding waveguide lasers," Opt. Express 27, 30941-30951 (2019)
Resumen
We report on mirrorless laser operation of Nd:YVO4 single- and double-cladding waveguides fabricated by femtosecond laser direct writing. Fundamental- (LP01) and high-order-mode (LP03, LP05) guiding and lasing have been observed in waveguides with different geometries and sizes. Double-cladding waveguides exhibit good guiding and lasing performance via inheriting advantages respectively from individual single cladding. As a result, continuous-wave lasing with a threshold as low as 59 mW is obtained, depending on the optical feedback provided only by Fresnel reflections at the waveguide end faces. By using few-layer graphene as saturable absorber, passively Q-switched operation in fabricated waveguides is also achieved.
URI
DOI
10.1364/OE.27.030941
Colecciones
- ALF. Artículos [297]
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