Terahertz photoconductive switch G12864 series ■Applications ●Far-infrared spectroscopy ●Material analysis ●Nondestructive and non-contact inspection ●Structure inspection ●Security, etc. ■Outlines The spectral region between light and electrical waves is known as terahertz(THz) region from the viewpoint of its frequency. This far-infrared spectral region has recentry attracted considerable attention for its potential applications in spectrscopy, imaging, telecommunications, medical analysis, and so on. THz photoconductive switch (sometimes called as photoconductive antenna) G12864 series is able to emit and/or detect THz wave by illuminating an ultrafast pulse laser. Small element size(6 mm x 10 mm) helps easy installation in a system. ■Absolute maximum ratings Limiting values that must not be exceeded even momentarily, and even any one of the ratings must not be exceeded. Parameter Symbol Value Unit Applied voltage Vop ±10 V Average input optical power *1) *2) Pave 10 mW Operating temperature *3) *4) Top(c) +5 to +40 ℃ Storage temperature *3) *4) Tstg -20 to +60 ℃ 2 *1) The beam diameter on the chip surface should be larger than 10 μm (1/e ). *2) Use a femtosecond laser with repetition rate from 50 MHz to 150 MHz. *3) No condensation. *4) In the vacuum or non-activated gas atmosphere. ■Electrical and optical characteristics (Top(c)=25 ℃) Parameter Dark resistance Photoelectric current *1) Symbol Min. Typ. Max. Unit Rt 20 - - MΩ I 5 - - μA *1) Factory inspection is performed using CW laser to measure the photoelectric current. The conditions are, applied voltage of 10 V, input light power of 10 mW, and beam diameter of 10 μm to 20 μm(1/e2). Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions. Specifications are subject to change without notice. No patent rights are granted to any of the circuits described herein. ©2015 Hamamatsu Photonics K.K. Terahertz photoconductive switch G12864 series ■Recommended conditions for mounting Temperature Time Environment < 80 ℃ Less than 2 hours Inert gas atmosphere ■Dimensional outline (Unit: mm) Ceramic substrate Index mark Name plates Photoconductive part Through holes 4-φ0.5 φ2.5 Photoconductive switch 0.5±0.1 4±0.1 0.635±0.1 6±0.1 3.5±0.05 10 +0 -0.1 9±0.2 6±0.1 Center marks 3.5±0.05 0.35±0.05 +0 6 -0.1 *1) Hatched areas show electrodes(except name plates and an index mark). *2) Warp of the ceramic substrate is smaller than 0.2 mm. ■Prepared electrode patterns of photoconductive switch / schematic figure of photoconductive part ●Dipole G12864-01 10 μm 6 μm ●Bow-tie G12864-02 20 μm 2 mm 60 ° Magnified 6 μm 6 μm HAMAMATSU PHOTONICS K.K. www.hamamatsu.com HAMAMATSU PHOTONICS K.K., Laser Group, Sales Dept. 1-8-3, Shinmiyakoda, Kita-ku, Hamamatsu City, Shizuoka, 431-2103, Japan, Telephone: (81)53-484-1301, Fax: (81)53-484-1302, E-mail: [email protected] U.S.A.: Hamamatsu Corporation: 360 Foothill Road, Bridgewater, N.J 08807, U.S.A., Telephone: (1)908-231-0960, Fax: (1)908-231-1218 E-mail: [email protected] Germany: Hamamatsu Photonics Deutschland GmbH.: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49)8152-375-0, Fax: (49)8152-265-8 E-mail: [email protected] France: Hamamatsu Photonics France S.A.R.L.: 19, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: (33)1 69 53 71 00, Fax: (33)1 69 53 71 10 E-mail: [email protected] United Kingdom: Hamamatsu Photonics UK Limited: 2 Howard Court,10 Tewin Road, Welwyn Garden City, Hertfordshire AL7 1BW, UK, Telephone: (44)1707-294888, Fax: (44)1707-325777 E-mail: [email protected] North Europe: Hamamatsu Photonics Norden AB: Torshamnsgatan 35 16440 Kista, Sweden, Telephone: (46)8-509-031-00, Fax: (46)8-509-031-01 E-mail: [email protected] Italy: Hamamatsu Photonics Italia S.r.l.: Strada della Moia, 1 int. 6 20020 Arese (Milano), Italy, Telephone: (39)02-93581733, Fax: (39)02-93581741 E-mail: [email protected] China: Hamamatsu Photonics (China) Co., Ltd.: B1201 Jiaming Center, No.27 Dongsanhuan Beilu, Chaoyang District, Beijing 100020, China, Telephone: (86)10-6586-6006, Fax: (86)10-6586-2866 E-mail: [email protected] Cat. No. LPRD1028E02 DEC. 2015