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Direct inscription of structures by femtosecond‐laser pulses facilitates the flexible fabrication of diverse optical channel waveguides in dielectric laser gain media. Among them, beam‐splitter‐type waveguide lasers have been recently studied; however, there is a lack of investigations on the effect of unique characteristics of such waveguides, such as controlled splitting ratios of output powers...
Compact pulsed laser sources are of interest for diverse application areas. Due to their broad gain bandwidth, high Stokes efficiency and low thermal load near the 1 μm spectral region, ytterbium doped laser materials are promising for such devices. Channel waveguides in such gain media provide compact laser systems and deliver efficient single-mode laser operation with low laser thresholds. One of...
During the past decade, femtosecond pulse direct-laser-written (fs-DLW) waveguides in transparent materials have emerged as an enabling technology for the production of laser-active integrated photonic devices [1]. The thulium (Tm3+) ion is attractive for its eye-safe broadband emission at ∼2 μm (3F4 → 3H6 transition). Tm waveguide lasers are interesting for environmental and medical sensing applications...
We propose a ß-switched channel waveguide laser operating near 1 μm in mirrorless resonator configuration. PMMA-assisted monolayer graphene acting as saturable absorber is grown by chemical vapor deposition and transferred onto an end facet of the waveguide.
We studied operation characteristics of a Gd3+ and Lu3+ co-doped Yb:KYW planar waveguide laser, Q-switched by carbon nanotube-based saturable absorbers in two direct interaction and one evanescent-field interaction regimes.
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