High efficiency cascaded third-harmonic generation in a quasi-periodically poled KTiOPO4 crystal

被引：5

作者：

Vernay, Augustin ^{[1
]}

Bonnet-Gamard, Lucas ^{[1
]}

Boutou, Veronique ^{[1
]}

Trajtenberg-Mills, Sivan ^{[2
]}

Arie, Ady ^{[2
]}

Boulanger, Benoit ^{[1
]}

机构：

[1] Univ Grenoble Alpes, Inst Neel, CNRS, Grenoble INP, F-38000 Grenoble, France

[2] Tel Aviv Univ, Fac Engn, US Sch Elect Engn, Tel Aviv, Israel

来源：

OSA CONTINUUM | 2020年 / 3卷 / 06期

基金：

以色列科学基金会;

关键词：

PARAMETRIC OSCILLATION; KTP; LIGHT;

D O I：

10.1364/OSAC.395084

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We performed and studied cascaded third-harmonic generation (THG) in a quasiperiodically poled KTP (QPPKTP) crystal allowing simultaneous phase-matching of the two cascading steps omega + omega -> 2 omega and 2 omega + omega -> 3 omega. The phase-matching was achieved at the fundamental wavelength lambda(omega) = 1587 nm when the QPPKTP crystal was heated to 95 degrees C. The energy conversion efficiency reached 40% in the picosecond regime for a fundamental energy of 20 mu J that corresponds to an intensity of 1.5 GW/cm(2). It is the highest value of THG efficiency ever reported to the best of our knowledge. The modeling in the case of the depleted pump regime accurately described the experiments. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：1536 / 1544

页数：9

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