Nonlinear frequency conversion of a Ho :YAG laser beam

We report the results of experiments on frequency conversion of a Ho : YAG laser beam (wavelength λ ∼ 2.1 μm) into the near-, mid-, and far-IR regions, aimed at expanding the spectral composition of compact multispectral sources of coherent radiation. The experimentally found laser conversion effici...

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Bibliographic Details
Published in:Quantum electronics (Woodbury, N.Y.) N.Y.), 2022-03, Vol.52 (3), p.262-268
Main Authors: Vorontsov, K.V., Garanin, S.G., Egorov, N.A., Zakharov, N.G., Zorin, R.A., Kolomeets, V.B., Lazarenko, V.I., Nadezhin, A.S., Nomakonov, G.N., Tulyakov, K.A., Frolov, Yu.N.
Format: Article
Language:English
Subjects:
Coherent radiation
Ho :YAG laser
Laser beams
Lasers
nonlinear conversion
optical parametric oscillator
second-harmonic generator
Semiconductor lasers
YAG lasers
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Summary:We report the results of experiments on frequency conversion of a Ho : YAG laser beam (wavelength λ ∼ 2.1 μm) into the near-, mid-, and far-IR regions, aimed at expanding the spectral composition of compact multispectral sources of coherent radiation. The experimentally found laser conversion efficiency into the second harmonic reaches 32 % and 54 % in the cw and repetitively pulsed regimes, respectively. The parametric conversion efficiency into the mid-IR range ( λ = 3.5 – 5.0 μm) reaches 55 %, while for the far-IR range ( λ = 8 – 8.2 μm) it turns out to be 10.5 %.
ISSN:1063-7818
1468-4799
DOI:10.1070/QEL18007