Ion-exchanged waveguides in periodically poled Rb-doped KTiOPO4 for efficient second harmonic generation

被引：7
|
作者：
Mutter, Patrick [1 ]
Kores, Cristine C. [1 ]
Widarsson, Max [1 ]
Zukauskas, Andrius [1 ]
Laurell, Fredrik [1 ]
Canalias, Carlota [1 ]
机构：
[1] KTH Royal Inst Technol, Dept Appl Phys, Roslagstullsbacken 21, S-10691 Stockholm, Sweden
来源：
OPTICS EXPRESS | 2020年 / 28卷 / 26期
关键词：
POTASSIUM TITANYL PHOSPHATE; INDUCED INFRARED-ABSORPTION; PHOTON PAIRS; DIODE-LASER; KTP; LIGHT; CONVERSION; BAND; FABRICATION; DYNAMICS;
D O I：
10.1364/OE.410773
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
An ion-exchange process has been developed for periodically poled Rb-doped KTIOPO4(RKTP) which warrants high efficiency and low loss channel waveguides. The domain stability was investigated, and it was found that domain gratings with uncharged walls could stand the ion-exchange process without deterioration. 3.1 mW of blue second harmonic light was generated from 74 mW of radiation at 940.2 nm coupled into an 8 mu m wide and 7 mm long waveguide, corresponding to a normalized conversion efficiency of 115%/Wcm(2). Waveguides in PPRKTP open the possibility for stable operation at high optical powers, as well as generating entangled photons at low optical powers, and enable the investigation of novel nonlinear processes such as counter-propagating interactions in a waveguide format. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
引用
收藏
页码：38822 / 38830
页数：9
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