High power continuous-wave diode-laser-pumped Nd:YAG laser

Golla, D.; Knoke, S.; Schöne, W.; Tünnermann, Andreas; Schmidt, H.E.

doi:10.1007/bf01081878

Cited by 27 publications

(2 citation statements)

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“…In the late 1980s, a reasonably priced 808 nm diode laser first appeared in the market and many scientists turned their attention to it in their search for an alternative pump source for Nd : YAG and other Nd-hosted lasers [1]. Previously, the main pump source for the Nd : YAG laser and its relatives was a flash lamp.…”

Section: Introductionmentioning

confidence: 99%

“…where I λ/2 , I λ are the intensities (Watt m −2 ) of the second harmonic beam (λ/2 = 532 nm) and fundamental beam (λ = 1064 nm), respectively, l is the length of the nonlinear crystal, ε 0 and c are the dielectric constant and light speed in a vacuum, n λ and n λ/2 are the refractive indices (in the crystal) of the 1064 and 532 nm waves, d is the nonlinear optical coefficient of the crystal and k = 2π λ (n λ − n λ/2 ). In formula (1) it can be seen that the conversion efficiency increases with high fundamental beam intensity. A beam with small cross section traveling through the crystal will be converted more efficiently than a broad beam with the same power.…”

Section: Introductionmentioning

confidence: 99%

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Development and application investigation of an ICSHG 532 nm diode-pumped solid-state laser system

Phan

Tu²,

Nguyen³

et al. 2011

Adv. Nat. Sci: Nanosci. Nanotechnol.

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A diode-pump solid-state laser system emitting a 532 nm beam has been developed. The pump source is an 808 nm diode laser, which has gained wide acceptance in research as well as in commercial production due to its effectiveness and reasonable price. The active medium was chosen to be Nd:YVO 4 (neodymium-doped yttrium orthovanadate), a material with many advantages over traditional Nd:YAG (neodymium-doped yttrium aluminum garnet) such as a low lasing threshold and linearly polarized beam. However, the thermal conductivity of Nd:YVO 4 is not as good as Nd:YAG, thus the thermal lens effect inside Nd:YVO 4 under high pumping intensity becomes severe and detrimental to the laser performance. Our work showed that careful adjustments of Nd:YVO 4 temperature as well as of the cavity's parameters played an important role in the performance of the laser. Potassium titanyl phosphate (KTP), a nonlinear optics crystal, was used to convert the fundamental 1064 nm laser radiation from Nd:YVO 4 into 532 nm. The 532 nm laser beam has been successfully proven to cut wood, plastic and aluminum.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Development and application investigation of an ICSHG 532 nm diode-pumped solid-state laser system

Phan

Tu²,

Nguyen³

et al. 2011

Adv. Nat. Sci: Nanosci. Nanotechnol.

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Lasers

Photonics

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The LASER light source, whose name is based on "Light Amplification by Stimulated Emission of Radiation", is the most important device in almost all photonic applications. First built in 1960 [6.1-6.5] it allows the generation of light with properties not available from natural light sources. Modern commercially available laser systems allow output powers of up to 10 20 W for short times with good beam quality and of several kW in continuos operation, usually with less good beam quality. Very short pulses with durations smaller than 5 · 10 −15 s, wavelengths from a few nm in the XUV to the far IR with several 10 µm, pulse energies of up to 10 4 J and frequency stability's and resolutions of better 10 −13 can be generated. The laser prices range from $ 1 to many millions of dollars and their size from less than a cubic mm to the dimensions of large buildings.The good coherence and beam quality of laser light in combination with high powers and short pulses are the basis for many nonlinear interactions, but the laser is a highly nonlinear optical device itself, using nonlinear properties of materials as described in the previous chapters. Therefore, the fundamental laws treated in Chap. 2 for the description of light as well as the description of linear and nonlinear interactions of light with matter in Chaps. 3, 4 and 5 are the basis for the analysis of laser operation and its light properties. Therefore, the theoretical description of laser devices represents an application of these laws and can be presented in this chapter in a compact form. For details the related sections of the previous chapters should be consulted. The different lasers and their constructions, as well as the resulting relevant light and operation parameters, are described and the consequences for photonic applications are discussed. Finally, possible classifications are given and safety aspects are mentioned. For further reading see [M6, M16, M17, M23-M25, M27, M28, M30, M33, M43, M44, M49, M50, M58-M65].

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Lasers

Menzel¹

2001

Photonics

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High power continuous-wave diode-laser-pumped Nd:YAG laser

Cited by 27 publications

References 13 publications

Development and application investigation of an ICSHG 532 nm diode-pumped solid-state laser system

Development and application investigation of an ICSHG 532 nm diode-pumped solid-state laser system

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