Tunable Backward THz-Wave Parametric Oscillator Centered at a High Frequency of 0.87 THz

被引：0

作者：

Muldera, Joselito E. ^{[1
]}

Nawata, Kouji ^{[1
,2
]}

Takida, Yuma ^{[1
]}

Yadav, Deepika ^{[1
]}

Minamide, Hiroaki ^{[1
]}

机构：

[1] RIKEN, Ctr Adv Photon, Tera Photon Res Team, 519-1399 Aramaki Aoba, Sendai, Miyagi 9800845, Japan

[2] Tohoku Inst Technol, Dept Informat & Commun Engn, Sendai, Miyagi 9828577, Japan

来源：

2023 48TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES, IRMMW-THZ | 2023年

关键词：

D O I：

10.1109/IRMMW-THz57677.2023.10299368

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We present the first demonstration of a "high frequency" backward THz-wave parametric oscillator designed for a center frequency of 0.87 THz by quasi-collinear phase matching in a slant-stripe-type periodically poled lithium niobate crystal when pumped with sub-nanosecond pulsed source of lambda = 1064.44 nm. Along with the THz wave, an idler wave appears simultaneously with lambda = 1067.75 nm. We also show that the oscillation frequency is tunable by a simple crystal rotation, spanning the range of 0.836 - 0.905 THz based on the change in the spectral line separation between the pump and idler beams. The threshold pump energy for BW-TPO was determined to be 12.4 mJ, equivalent to a pump intensity of 7.24 GW/cm(2) while obtaining a conversion efficiency as high as 8.39% at a pump energy (intensity) of 15.5 mJ (9.05 GW/cm(2)).

引用

页数：2

共 5 条

[1] Backward optical parametric oscillators and amplifiers [J].