R943-02_15 Datasheet, PDF (1/4 Pages) Hamamatsu Corporation – GaAs (Cs) Photocathode, Wide Spectral Response, 51 mm (2) Diameter Head-on Type for Photon Counting, Low Dark Counts, Excellent P.H.D.

PHOTOMULTIPLIER TUBE
R943-02
GaAs (Cs) Photocathode, Wide Spectral Response, 51 mm (2") Diameter
Head-on Type for Photon Counting, Low Dark Counts, Excellent P.H.D.
FEATURES
G Wide Spectral Response ............. 160 nm to 930 nm
G High Quantum Efficiency in Near IR ... 14 % at 632.8 nm
G Fast Rise Time ................................. 3.0 ns at 1500 V
G Excellent Single Photoelectron
Pulse Height Distribution
........................... Peak to Valley Ratio 2.3 (at -20 °C)
G Low Dark Counts ..................... 20 s^-1 Typ. (at -20 °C)
APPLICATIONS
G Raman Spectroscopy
G Fluorescent Spectroscopy
G Astrophysical Measurement
G Laser Detection
Hamamatsu R943-02 is a 51 mm (2") diameter head-on type photomultiplier tube having GaAs (Cs) photocathode and synthetic
silica window. The combination of the GaAs photocathode and the synthetic silica window allows high sensitivity over a wide spectral
range from UV to IR (160 nm to 930 nm).
The R943-02 is selected for photon counting and features low dark counts and excellent pulse height distribution (PHD) of single
photoelectrons.
GENERAL
Parameter
Description / Value
Unit
Spectral Response
160 to 930
nm
Wavelength of Maximum Response
300 to 800
nm
Photocathode
MateriaI
GaAs(Cs)
—
Minimum Effective Area
10 × 10
mm
Mode
Opaque
—
Window Material
Synthetic silica glass
—
Dynode
Secondary Emitting Surface
Cu-BeO
—
Structure
Linear focused
—
Number of Stages
10
—
Direct Interelectrode Capacitances
Anode to Last Dynode
Approx. 2.7
pF
Anode to All Other Electrodes
Approx. 5.0
pF
Base
21-pin glass base
—
SuitabIe Socket
E678–21C (supplied)
—
Weight
93
g
Operating Ambient Temperature
-30 to +50
°C
Storage Temperature
-80 to +50
°C
Figure 1: Typical Spectral Response
TPMHB0281EA
10²
10¹
QUANTUM
EFFICIENCY
CATHODE
RADIANT
SENSITIVITY
10⁰
10-¹
10-²
200
400
600
800
WAVELENGTH (nm)
1000
Subject to local technical requirements and regulations, availability of products included in this promotional material may vary. Please consult with our sales office.
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. ©2010 Hamamatsu Photonics K.K.