Doubling of THz emission in nonlinear borate crystals | Izvestiya vuzov. Fizika. 2021. № 7. DOI: 10.17223/00213411/64/7/157

Doubling of THz emission in nonlinear borate crystals

We present the possibility of effective doubling of millimeter wave radiation in the range of 400-2500 μm in borate crystals. The phase matching angles are calculated. It is shown that for LN and β-BBO crystals the realization of o + o → e and e + o → e interactions is possible, and for LB4 only o + o → e. The walk-off angle, spectral and angular phase-matching bandwidth are calculated. An estimate is given of the maximum efficiency of SHG taking into account the measured optical damage threshold of 150 TW/cm² for the LB4 crystal and 100 TW/cm² for β-BBO.

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Keywords

second harmonic generation, THz waves, nonlinear crystals, lithium tetraborate Li₂B₄O₇, beta barium borate β-BaB₂O₄, lithium niobate LiNbO₃, lithium triborate LiB₃O₅

Authors

Name	Organization	E-mail
Ezhov D.M.	National Research Tomsk State University	ezhov_dm@mail.ru
Lubenko D.M.	Institute of High-Current Electronics of the SB RAS	lubenkodm@gmail.com
Andreev Yu.M.	National Research Tomsk State University; Institute of Monitoring of Climatic and Ecological Systems of the SB RAS	yuandreev@yandex.ru

Всего: 3

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