28% electrical-efficiency operation of a diode-side-pumped Nd:YAG rod laser

Fujikawa, Shuichi; Furuta, Keisuke; Yasui, Koji

doi:10.1364/ol.26.000602

Cited by 35 publications

(13 citation statements)

References 3 publications

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“…When energy transfer is a dipole-dipole interaction, energy transfer rates depend on the distance between the interacting atoms to the inverse sixth power. 28 and P 71 are the energy transfer parameters. The rate that energy transfers out of manifold 2 is directly dependent on the population density in the donating manifold, manifold 2, as well as the population density in the accepting manifold, manifold 8.…”

Section: Quantum Efficiencymentioning

confidence: 99%

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Solid-State Lasers From an Efficiency Perspective

Barnes

2007

IEEE J. Select. Topics Quantum Electron.

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Solid state lasers have remained a vibrant area of research because several major innovations expanded their capability. Major innovations are presented with emphasis focused on the laser efficiency. A product of efficiencies approach is developed and applied to describe laser performance. Efficiency factors are presented in closed form where practical and energy transfer effects are included where needed. In turn, efficiency factors are used to estimate threshold and slope efficiency, allowing a facile estimate of performance. Spectroscopic, thermal, and mechanical data are provided for common solid state laser materials.Index terms: Solid state lasers, laser efficiency, diode pumped solid state lasers, laser modeling Introduction:Solid state lasers remain a vibrant area because of several innovations in technology and because they have capabilities available with no other type of laser. These innovations have opened up fruitful new areas for solid state laser research. Directly below, 4 major innovations appear with other innovations scattered throughout the text. Some important solid state laser capabilities result from their ability to store energy. Efficient energy storage for millisecond time intervals is unique to solid state lasers. Energy storage permits solid state lasers to serve as optical integrators. Low brightness optical pumps can be optically integrated and laser energy delivered in a high peak power and high brightness laser beam. This capability of solid state lasers is a prime reason for their utility.

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Section: Quantum Efficiencymentioning

confidence: 99%

“…A side pumped design, where lens ducts concentrated laser diode radiation on the lateral surfaces of the laser rod, achieved a 320 W output with a threshold of 200 W and a slope efficiency of 0.36, electrical to optical [28].…”

Section: Examplesmentioning

confidence: 99%

Solid-State Lasers From an Efficiency Perspective

Barnes

2007

IEEE J. Select. Topics Quantum Electron.

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“…Over the past few years, as diode bars have become more powerful and lower in cost, diode-pumped lasers have been used more commonly to replace flash-lamp pumped systems. Recent progress in the development of diode stacks has offered significant power enhancement for diode-pumped, solid-state lasers [1]. Diode-pumped, active Q-switched lasers, which show good beam quality and high output peak power, are commonly utilized in material processing and nonlinear frequency conversion applications [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

High Power Diode-Side-Pumped Q-Switched Nd:YAG Solid-State Laser with a Thermoelectric Cooler

et al. 2015

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Abstract:A diode-side-pumped, high-energy, high-beam-quality, pulsed solid-state Nd 3+ :Y3Al5O12 (Nd:YAG) laser with a thermoelectric cooler (TEC) is investigated in this study. The pump laser was a pulsed laser diode array with maximum peak power of 15 kW. A 350 mJ laser pulse was obtained with a wavelength of 1064 nm, a pulse duration of 10 ns, a total electrical-to-optical efficiency of 7.5%, a relative stability of output energy of 5%, and a beam quality of M 2 < 4.

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“…2 Moreover, the lifetimes of diode lasers (5000 to 10,000 hr) exceed those of flash lamps (less than 1000 hr). 3 Other advantages of high-power diode lasers as compared to flash lamps are the smaller size, the simpler power and cooling supplies (lower voltages), and the fact that the light from laser diodes is directional and can be focused to a small spot, thereby increasing the achievable pump intensity.…”

Section: Introductionmentioning

confidence: 99%

Effects of radiation on laser diodes.

Phifer

2004

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The effects of ionizing and neutron radiation on the characteristics and performance of laser diodes are reviewed, and the formation mechanisms for nonradiative recombination centers, the primary type of radiation damage in laser diodes, are discussed. Additional topics include the detrimental effects of aluminum in the active (lasing) volume, the transient effects of high-doserate pulses of ionizing radiation, and a summary of ways to improve the radiation hardness of laser diodes. Radiation effects on laser diodes emitting in the wavelength region around 808 nm are emphasized.3

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28% electrical-efficiency operation of a diode-side-pumped Nd:YAG rod laser

Cited by 35 publications

References 3 publications

Solid-State Lasers From an Efficiency Perspective

Solid-State Lasers From an Efficiency Perspective

High Power Diode-Side-Pumped Q-Switched Nd:YAG Solid-State Laser with a Thermoelectric Cooler

Effects of radiation on laser diodes.

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