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20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
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20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

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Near-infrared lasers and self-frequency-doubling in Nd:YCOB cladding waveguides

Yingying Ren1, Feng Chen, Javier R Vázquez de Aldana

  • 1School of Physics, State Key Laboratory of Crystal Materials and Key Laboratory of Particle Physics and Particle Irradiation (Ministry of Education), Shandong University, Jinan 250100, China.

Optics Express
|May 15, 2013
PubMed

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Hydrocarbons such as alkanes, alkenes, and alkynes show characteristic C–H stretching absorption bands. These IR stretching frequencies depend on the hybridization of the involved carbon atom and can be explained in terms of the s character of each hybridized atomic orbital.
Among the sp, sp2, and sp3 hybridized orbitals, sp orbitals have the maximum s character (50%). Consequently, the electrons are held more closely to the nucleus, resulting in stronger and shorter C–H bonds that stretch at a...