Room-temperature operation of an Yb-doped Gd3Ga5O12 buried channel waveguide laser at 1.025 μm wavelength

Shimokozono, Makoto; Sugimoto, N.; Tate, Atsushi; Katoh, Yujiro; Tanno, Masaaki; Fukuda, Shin–ichi; Ryuoh, T.

doi:10.1063/1.116004

Cited by 34 publications

(9 citation statements)

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“…Single crystals of yttrium-aluminum garnet Y 3 Al 5 O 12 (YAG) activated with ytterbium Yb 3+ have attracted the researchers' attention in the last years as high-performance materials for high power diode pumped wave-guide [1,2] and thin-disk lasers [3][4][5]. The main advantages of ytterbium ions in laser gain media in comparison to traditional neodymium ions are: high pump efficiency, low thermal load, wider pumping band, longer upper-state lifetime, and relatively large emission cross sections.…”

Section: Introductionmentioning

confidence: 99%

Optical properties of epitaxial YAG:Yb films

Ubizskii

Matkovskii

Melnyk³

et al. 2004

phys. stat. sol. (a)

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This work deals with the investigation of the optical properties of epitaxial YAG : Yb films and their suitability as gain media for thin disk lasers. Epitaxial films of YAG : Yb were grown by the liquid phase epitaxy method in air on the (111)-oriented YAG substrates. The thickness of the grown layers was from 30 to 260 µm. The melt composition was varied to obtain the desired doping level from 10 to 15% and to optimize the optical properties. The best epitaxial films were colourless and had an Yb 3+ luminescence lifetime of more than 950 µs, which is very close to the intrinsic lifetime of the Yb ions in the bulk YAG single crystals. These films were tested in a thin disk laser setup with 24 absorption passes of the 940 nm pumping beam. The maximum output power at 1.03 µm wavelength in CW operation reached more than 60 W and the optical efficiency was close to 30%.

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Section: Introductionmentioning

confidence: 99%

Optical properties of epitaxial YAG:Yb films

Ubizskii

Matkovskii

Melnyk³

et al. 2004

phys. stat. sol. (a)

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Section: Liquid Phase Epitaxy (Lpe)mentioning

confidence: 99%

“…The main limitations of this method are the lack of accurate thickness control and the poor surface uniformity of the layer, which however, can be overcome by polishing. LPE has been extensively used for growth of oxide layers and for waveguide lasers in particular, early work focused on development of rare-earth doped garnet films [66,[68][69][70][71][72][73][74][75].Research interest in recent years has shifted towards deposition of rare-earth doped double tungstate structures [65,[76][77][78][79][80][81][82][83][84][85], due to a number of favorable properties of these crystals, such as the possibility of doping with high concentrations of rare earth ions and the large emission and absorption cross sections of the latter in this family of crystals. Finally, there is only one report to date on a waveguide laser based on other crystals, namely on YLF:Nd 3+…”

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confidence: 99%

Optically pumped planar waveguide lasers, Part I: Fundamentals and fabrication techniques

Grivas

2011

Progress in Quantum Electronics

193

102

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Abstract:The tremendous interest in the field of waveguide lasers in the past two decades is largely attributed to the geometry of the gain medium, which provides the possibility to store optical energy on a very small dimension in the form of an optical mode. This allows for realization of sources with enhanced optical gain, low lasing threshold, and small footprint and opens up exciting possibilities in the area of integrated optics by facilitating their on-chip integration with different functionalities and highly compact photonic circuits. Moreover, this geometrical concept is compatible with high power diode pumping schemes as it provides exceptional thermal management, minimizing the impact of thermal loading on laser performance. The proliferation of techniques for fabrication and processing capable of producing high optical quality waveguides has greatly contributed to the growth of waveguide lasers from a topic of fundamental research to an area that encompasses a variety of practical applications. In this first part of the review on optically pumped waveguide lasers the properties that distinguish these sources from other classes of lasers will be discussed. Furthermore, the current state-of-the art in terms of fabrication tools used for producing waveguide lasers is reviewed from the aspects of the processes and the materials involved. 2 1.IntroductionOver the last two decades the field of solid-state planar waveguide lasers has experienced a steady growth, progressing from a laboratory curiosity to an area that demonstrates a broad spectrum of applications, from multiwavelength laser channel arrays for telecommunications to diode-pumped planar structures with multiwatt output powers for sensing and ranging applications. Waveguide lasers are by no means a new field and the first report on such a source dates back in 1961, when laser operation of a waveguide based on an active glass core rod embedded in a low refractive index cladding was demonstrated [1]. However research efforts in the years that followed this report focused primarily on the development of optically pumped laser sources based on high optical quality bulk dielectric laser media in the form of rods and slabs. The merits of the waveguide geometry and the associated optical confinement have been first highlighted in single mode glass optical fibers. Fibers have proven an enabling technology for realization of highly efficient amplifier and laser sources owing to their unrivalled low loss performance and ability to maintain a small spot size and hence high intensities over lengths that are orders of magnitude longer than would normally be allowed by diffraction, [2,3]. Er-doped fiber amplifiers (EDFAs) in particular have directly contributed to the enormous expansion of the optical communications networks that underpin today's internet infrastructure by allowing for signal regeneration and optical data transmission over long distances. The excellent performance of fiber lasers and amplifiers provided motivation and triggered a major techn...

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“…Yb 3 -doped, planar, waveguide lasers have been fabricated in YAG by epitaxial growth [22] and by ion implantation [23]. Yb 3 -doped, channel, waveguide lasers have also been reported in gadolinium gallium garnet [24] and lithium niobate [25]. In addition, low-power, all-optical, switching devices have been demonstrated in Yb 3 -doped optical fibers [26] and planar waveguides [27] based on pump-induced resonant nonlinearities at 1301 and 1545 nm.…”

Section: Introductionmentioning

confidence: 99%

Ytterbium-doped glass waveguide laser fabricated by ion exchange

Florea

Winick

1999

J. Lightwave Technol.

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Abstract-A ytterbium-doped, glass, channel waveguide laser, fabricated by ion exchange, is reported. The 2.2-cm long device, using broad-band 4% output couplers, lased in the vicinity from 1020 to 1030 nm when pumped by a Ti : sapphire laser operating at 910 nm. A lasing threshold of 50 mW (launched pump) and a slope efficiency of 5% were measured. Device parameters, including fluorescence lifetimes, emission and absorption cross sections, propagation losses, and mode profiles were experimentally determined and laser performance was analytically modeled using this data.

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Room-temperature operation of an Yb-doped Gd3Ga5O12 buried channel waveguide laser at 1.025 μm wavelength

Cited by 34 publications

References 0 publications

Optical properties of epitaxial YAG:Yb films

Optical properties of epitaxial YAG:Yb films

Optically pumped planar waveguide lasers, Part I: Fundamentals and fabrication techniques

Ytterbium-doped glass waveguide laser fabricated by ion exchange

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