Highly efficient neodymium:yttrium aluminum garnet laser end pumped by a semiconductor laser array

Sipes, Donald L.

doi:10.1063/1.96256

Cited by 154 publications

(18 citation statements)

References 11 publications

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“…With the advent of emerging diode laser-pumped lasers at shorter wavelengths such as green-blue wavelength regions, the disadvantage of limited wavelength choice is readily overcome. The diode-pumped lasers exhibit advantages of good spectral match, high efficiency, and good beam quality over conventional IR or red diode lasers and lamp-pumped solid-state lasers [29,30]. Furthermore, the power of these diode laser-pumped lasers (from several mW to decade mW) is large enough for high sensitivity fluorescence detection for CE.…”

Section: Introductionmentioning

confidence: 98%

A compactly integrated laser‐induced fluorescence detector for microchip electrophoresis

Lin

et al. 2004

Electrophoresis

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A simple and easy-to-use integrated laser-induced fluorescence detector for microchip electrophoresis was constructed and evaluated. The fluid channels and optical fiber channels in the glass microchip were fabricated using standard photolithographic techniques and wet chemical etching. A 473 nm diode-pumped laser was used as the excitation source, and the collimation and collection optics and mirrors were discarded by using a multimode optical fiber to couple the excitation light straight into the microchannel and placing the microchip directly on the top of the photomultiplier tube. A combination of filter systems was incorporated into a poly(dimethylsiloxane) layer, which was reversibly sealed to the bottom of the microchip to eliminate the scattering excitation light reaching to the photomultiplier tube. Fluorescein/calcein samples were taken as model analytes to evaluate the performance with respect to design factors. The detection limits were 0.05 microM for fluorescein and 0.18 microM for calcein, respectively. The suitability of this simple detector for fluorescence detection was demonstrated by baseline separation of fluorescein isothiocyanate (FITC)-labeled arginine, phenylalanine, and glycine and FITC within 30 s at separation length of 3.8 cm and electrical field strength of 600 V/cm.

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Section: Introductionmentioning

confidence: 98%

A compactly integrated laser‐induced fluorescence detector for microchip electrophoresis

Lin

et al. 2004

Electrophoresis

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“…[1][2][3][4][5][6][7] Diode pumped solid-state lasers offer high efficiency, high reliability, compactness, and high beam quality, especially in an end-pumping configuration. 8,9 Attempts have been made to raise the output power of diode end-pumped Nd doped lasers for many potential applications. 10,11 High-power, aluminum-free, long-life fiber-array packages are emerging as efficient pumping sources for solid-state lasers with spectral absorption bands in the vicinity of 800 nm.…”

Section: Introductionmentioning

confidence: 99%

“…10,11 High-power, aluminum-free, long-life fiber-array packages are emerging as efficient pumping sources for solid-state lasers with spectral absorption bands in the vicinity of 800 nm. [8][9][10][11][12][13][14] The presence of thermo-optical effects in high-power lasers makes it a challenge to combine high power with excellent beam quality. All Nd:YAG lasers, in spite of being in the shape of a rod, slab, or disc, develop thermal gradients within the laser material and cause thermally induced refractive index changes.…”

Section: Introductionmentioning

confidence: 99%

High data rate laser transmitter based on a diode double end-pumped Nd:YAG laser with linearly polarized output for free space laser communication

et al. 2008

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Optically pumped solid-state lasers with Nd:YAG may have to operate over a wide range of temperatures. We designed and fabricated a diode double end-pumped Nd:YAG laser for free space laser communication. Various laser beam parameters have been characterized for the same application. The temperature dependence of the effective stimulated emission cross section for 4 F 3/2 → 4 I 11/2 transition and fractional thermal loading of Nd:YAG are determined using a planar resonator with two collimated and focused pump beams from fiber-array package laser diodes at 808 nm. The pump power-induced thermal lensing is used to stabilize the cavity. The diode double end-pumped Nd:YAG laser possesses an extremely good beam profile that exactly matches the theoretical Gaussian intensity distribution up to a diode current of 30 A. After that the ellipticity slightly increases, indicating deviation from the circular symmetry of beam, which may be due to the thermally induced birefringence of the Nd:YAG crystal offered to the polarized laser beam. The thermal lens focal length decreases with an increase in the absorbed pump power, similar to the case of a lamp pumped Nd:YAG laser and a diode pumped Nd: YVO 4 laser. All the results indicate that the laser beam characteristics are useful for high data rate free space laser communication links.

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“…The early work by Sipes [14], in which he demonstrated the use of a diode laser array to end pump a Nd:YAG laser, has been extended by others to powers exceeding the multiwatt level [15,16]. Further improvements in average power is expected with the use of side pumping and the slab geometry [17] for controllingthe opticaldistortionscaused by thermal loading of the laser medium.…”

Section: High Average Power Diode Pumped Solid State Lasersmentioning

confidence: 99%

Advances in Nonlinear Optical Materials and Devices

Byer

1992

Nonlinear Optics

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Highly efficient neodymium:yttrium aluminum garnet laser end pumped by a semiconductor laser array

Abstract: Thermal lensing measurements in line-focus end-pumped neodymium yttrium aluminium garnet using holographic lateral shearing interferometry High power, high efficient neodymium:yttrium aluminum garnet laser end pumped by a laser diode array

Cited by 154 publications

References 11 publications

A compactly integrated laser‐induced fluorescence detector for microchip electrophoresis

A compactly integrated laser‐induced fluorescence detector for microchip electrophoresis

High data rate laser transmitter based on a diode double end-pumped Nd:YAG laser with linearly polarized output for free space laser communication

Advances in Nonlinear Optical Materials and Devices

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