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Nonlinear optical phenomena
A new criterion for determining optical damage of nonlinear optical crystals, based on the use of an RF oscillator circuit
K. V. Zotova, N. V. Tereshchenkoa, A. Yu. Ostapiva, G. Yu. Ivanova, O. A. Ryabushkinb
a Moscow Institute of Physics and Technology (National Research University), 141701, Dolgoprudnyi, Moscow oblast, Russia
b Kotelnikov Institute of Radioengineering and Electronics (Fryazino Branch), Russian Academy of Sciences, 141190, Fryazino, Moscow oblast, Russia
Abstract:
A criterion is proposed for determining laser breakdown in nonlinear optical crystals, based on measuring the absorption coefficient of optical radiation. A possibility of using a Pierce oscillator is demonstrated to determine the optical absorption coefficient in real time. The proposed criterion is applied to find the optical damage threshold of a lithium niobate crystal, which is 500 mJ/cm2, taking into account the self-focusing effect.
Keywords:
laser damage threshold, lithium niobate crystal, optical absorption.
Received: 15.09.2023
Revised: 05.10.2023
Accepted: 05.10.2023
Citation:
K. V. Zotov, N. V. Tereshchenko, A. Yu. Ostapiv, G. Yu. Ivanov, O. A. Ryabushkin, “A new criterion for determining optical damage of nonlinear optical crystals, based on the use of an RF oscillator circuit”, Kvantovaya Elektronika, 53:9 (2023), 720–724 [Bull. Lebedev Physics Institute, 51:suppl. 1 (2024), S51–S57]
Linking options:
https://www.mathnet.ru/eng/qe18333 https://www.mathnet.ru/eng/qe/v53/i9/p720
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| Abstract page: | 59 | | References: | 22 | | First page: | 6 |
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