Terahertz generation by means of ZnGeP2 large aperture photoconductive antenna

被引：4

作者：

Bulgakova, Vladislava ^{[1
]}

Ushakov, Aleksandr ^{[1
]}

Chizhov, Pavel ^{[1
]}

Yudin, Nikolay ^{[2
,3
,4
]}

Zinovev, Mikhail ^{[2
,3
,4
]}

Podzyvalov, Sergey ^{[2
,3
,4
]}

Dolmatov, Timophey ^{[1
]}

Bukin, Vladimir ^{[1
]}

Garnov, Sergey ^{[1
]}

机构：

[1] Russian Acad Sci, Prokhorov Gen Phys Inst, Moscow, Russia

[2] Natl Res Tomsk State Univ, Tomsk, Russia

[3] VE Zuev Inst Atmospher Opt SB RAS, Tomsk, Russia

[4] LLC Lab Opt Crystals, Tomsk, Russia

来源：

OPTICAL ENGINEERING | 2021年 / 60卷 / 08期

关键词：

ZnGeP2; photoconductive antenna; large-aperture photoconductive antennas; terahertz radiation; time-domain measurements; two-photon absorption; OPTICAL-PROPERTIES; EMISSION; CRYSTALS; GAAS;

D O I：

10.1117/1.OE.60.8.082015

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The generation of terahertz (THz) radiation using a ZnGeP2 (ZGP) large-aperture photoconductive antenna (PCA) was demonstrated. The semiconductors were excited above and below the bandgap (400 and 800 nm) by a femtosecond Ti:sapphire laser. The THz pulse waveform generated by the ZGP antenna was measured using a time-domain spectroscopy technique. The antenna's THz pulse energy dependence on the optical pump energy was measured, and saturation fluence and carrier mobility were estimated. The ZGP and a chemical vapor deposited ZnSe-based PCA were compared. (C) 2021 Society of Photo-Optical Instrumentation Engineers (SPIE)

引用

页数：6

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