Photon Counters

COUNT®

Photon Counters Count

This single photon counting module detects single photons in a range of 400-1000nm. It attains 70% photon detection efficiency in the red region and comparatively higher in the blue region from the ones that are currently available in the market.  It also has extreme low as 10 counts/s dark count rate than others. Well-suited for single photon LiDAR, particle sizing, confocal microscopy, Astronomy and quantum cryptography.   

Wavelength

400 – 1000nm

Dark Count Rate

10/20/ 50/ 100/250 counts/s

Photon Detection Efficiency

5-15% @ 405nm

60-70% @ 670nm

40-50% @ 810nm

Active Area

100µm

Afterpulsing Probability

0.2%

Dead Time

42-45ns

Time Delay

30ns

COUNT® Blue

Photon Counters Count Blue

This is specially designed for higher quantum efficiency at shorter wavelengths.  It can achieve 55%, 70% and 50% photon detection efficiency at blue, green and red regions respectively.  The dark count rates are very low from 20-250 counts/s in 350-1000nm range.  Its usage is relevant in Raman spectroscopy, confocal microscopy and time-resolved single molecule detection.

Wavelength

350 – 1000nm

Dark Count Rate

10/20/ 50/ 100/250 counts/s

Photon Detection Efficiency

50-55% @ 405nm

60-70% @ 532nm

50-55% @ 670nm

Active Area

100µm

Dead Time

42-45ns

Time Delay

30ns

COUNT® NIR

Lasers & Detectors Photon Counters Count NIR

This is a single photon counting module for NIR.  The highlights for this photon counter are enhanced detection efficiency, low dark count rate as 50counts/s and greater stability around 810nm.  This wavelength acts as a main role in quantum cryptography applications.  

Wavelength

400 – 1000nm

Dark Count Rate

50/ 100/250/500 counts/s

Photon Detection Efficiency

60-70% @ 670nm

50-60% @ 810nm

Active Area

100µm

Dead Time

42-45ns

Time Delay

30ns

COUNT® S

Photon Counters Count S

High detection efficiencies of 60% at 405nm, 65% at 670nm and 45% at 810nm and dark count rates in the range of 1000-5000 counts/s are the attributes of this photon counter.   It is available with a larger active area of 500µm making it an actively quenched module. This can be used to do experiments in laser physics for high school and college students with count rates of upto 800 Kcps.

Wavelength

400 – 1000nm

Dark Count Rate

1000-5000 counts/s

Photon Detection Efficiency

60% @ 405nm

65% @ 670nm

45% @ 810nm

Active Area

500µm

Dead Time

300-1500ns

700ns(typical)

Time Delay

20ns

 

COUNT® T

Photon Counters Count T

This is called time-correlated single photon counting module.  Because it can determine time of detection of a single photons based on a reference signal (a laser pulse) using statistical counting method. Having a timing resolution of upto 350ps makes ease of use for time-correlated single photon counting, fluorescence and photon correlated spectroscopy and in fluorescence life-time imaging.

Wavelength

400 – 1000nm

Dark Count Rate

100/250 counts/s

Photon Detection Efficiency

20-40% @ 405nm

60-75% @ 670nm

40-60% @ 810nm

Active Area

100µm

Dead Time

42-45ns

Time Delay

30ns

Enquire Now

You may tick one or more
Scroll to Top