High stability in dark current level
As
a result of the semiconductive inner surface of the CPM, no charge-up effects occur at the glass surface. This
results in a very high stability of the dark current level over time, with no sudden changes (bursts). The semiconductive
surface also causes high-light recovery times to be extremely small.
Fig. 3: Typical photo electron spectrum
2000
PMT
CPM
1500
Excellent photon counting resolution
At
gains exceeding 10
7
the single photo electron pulse is
perfectly separated from the electrical noise, due to a sa-
turation effect of the channel. The CPM exhibits single
photon resolution with excellent peak to valley ratios.
Fig. 3 shows the single photo electron spectrum taken
from a multi-channel analyzer compared to a conventional
photomultiplier (Fig. 3).
Counts
1000
500
Choice of entrance window
0
0
50
100
150
Channel
200
250
300
Fig. 4.1: Typical spectral response
100
The
CPM is available with different window materials,
which are:
MgF
2
, Quartz, UV-glass, and Borosilicate glass. The com-
bination of different photocathodes and entrance windows
results in a spectral range from 115 nm to 900 nm. Other
window materials and photocathode combinations are
available on a custom basis (Fig. 4.1 and 4.2).
Quantumefficency (%)
10
1
C 973
C 952
Available related products
C 922
C 911
0.1
100
200
300
400
500
600
700
800
Wavelength (nm)
C 972
900
Fig. 4.2: Typical spectral response
100
• High Voltage supply
CHV 30N (supplies 1 CPM, negative output voltage),
CHV 30P (supplies 1 CPM, positive output voltage),
J4-3N (supplies 10 to 15 CPMs)
10
C 943
C 944
1
C 942
C 962
0.1
100
200
300
400
500
600
700
800
900
Wavelength (nm)
• CPM Modules
MP900-series: Photoncounting module with
TTL output, including CPM,
electronic and high voltage
MD900-series: DC module including high
voltage supply, amplifier,
I/U converter, output 0 to 10 V,
bandwidth 1kHz
MH900-series: High voltage module,
including CPM and
high voltage power supply
• CPM Formats
Quantumefficency (%)
EU
PerkinElmer Optoelectronics GmbH
Heimann Opto
65020 Wiesbaden, Germany
PO-Box 3007
http://www.perkinelmer.com/opto
USA
PerkinElmer Optoelectronics
2175 Mission College Blvd.
Santa Clara, CA 95054
Tel. ++1 (408) 565 - 0830
Fax ++1 (408) 565 - 0703
http://www.perkinelmer.com/opto
/
3
“ C900-series
1
/
2
“ C1300-series
1
3
/
4
“ C1900-series
Datasheets on request
PERKINELMER [ PERKINELMER OPTOELECTRONICS ]
