Terahertz photoconductive switch modules (emission/detection modules for terahertz electromagnetic wave) G10620 series Integrated module of photoconductive switch and lens for terahertz electromagnetic wave ■Features ●Suitable for both emission and detection ●Small size module helps easy installation Small as 30 mm× 30 mm×13 mm ●Easy connection to other devices SMA connector facilities the connection with other equipments ■Applications THz emission / detection side ●Far-infrared spectroscopy ●Material analysis ●Nondestructive and non-contact inspection ●Structure inspection ●Security, etc. Excitation light input side ■Outlines G10620 series are terahertz(THz) electromagnetic waves emission/detection modules, in which a low-temperature-grown GaAs(LT-GaAs) based photoconductive switch(sometimes called as photoconductive antenna) and a lens for THz electromagnetic wave are integrated. Small size(30 mm × 30 mm × 13 mm except the protuberance) helps easy installation in a system. This module also has a SMA connector, which facilitates easy connection to other equipments. M6 and M2 tapping holes are prepared on three faces to help easy setup. There are three prepared electrode patterns of photoconductive switches; Dipole:G10620-11 and Bow-tie:G10620-12, and Spiral:G10620-13. ■Absolute maximum ratings Parameter ■Example of experimental setup Symbol Value Unit Vop ±15 V Average input optical power *2) *3) *4) Pave 15 mW Operating temperature *5) Top(c) +5 to +35 ℃ Storage temperature *5) Tstg -20 to +40 ℃ Applied voltage *1) *1) Recommended value is ±10 V. *2) Recommended value is 10 mW. *3) The beam diameter on the chip surface should be larger than 10 μm (1/e2). *4) Use a femtosecond laser with repetition rate from 50 MHz to 150 MHz. *5) No condensation. Off-Axis Paraboloidal Mirror Signal Generator Light for THz Emission Measured Sample Off-Axis Paraboloidal Mirror G10620 (Emitter) Beam Splitter Lens Variable Optical Delay Light for THz Detection Lens G10620 (Receiver) Current Preamplifier Femtosecond Pulse Laser ■Characteristics (Top(c)=25 ℃) Parameter Symbol Min. Typ. Max. Unit Dark resistance Rt 20 - - MΩ 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. Lock-in Amplifier Terahertz photoconductive switch modules (emission/detection modules for terahertz electromagnetic wave) G10620 series ■Typical measurement results of frequency spectrum * These are typical measurement results. Under improper experimental conditions, the similar results cannot be obtained. * To acquire these data, a pair of pallaboloidal mirrors are used between emission and detection modules. ●G10620-11 emitter 5 mW, receiver 5 mW ●G10620-12 emitter 5 mW, receiver 5 mW ■Dimensional outline (Unit: mm) Direction of the electrodes Lens for THz electromagnetic wave (Clear aperture diameter) 3-M6 , depth 6 Photosensitive area 6-M2 , depth 3 ■Prepared electrode patterns of photoconductive switch / schematic figure of photoconductive part Dipole: G10620-11 10 μm 6 μm Bow-tie: G10620-12 Spiral: G10620-13 2.4 mm 2 mm 20 μm 2.3 mm 60 ° Magnified Magnified 6 μm 6 μm HAMAMATSU PHOTONICS K.K. 5 μm 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. LPRD1027E07 DEC. 2015