Data sheet

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
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