HOHENHEIDE OÜ

Four-element detector 

 HH04-S1337 outer dimensions

outer dimensions, mm

principle beam journey

principle beam journey

4-element transmission photodetector

HH04-S1337

pdf icon

 


The four-element photodetector is the simplest transmission trap detector with coaxial input and output beams. The high-quality photodiodes are arranged in the device in such a way that the entering beam undergoes reflections in one plane only. The transmitted beam is about 1 ~% of the input beam and can be easily analyzed behind the detector or directed into next detector. The active area of 4-element transmission photodetector is a bit less than 50 % of the single photodiode in the device. This device can be used in measurements of optical power where back-reflection is necessary to avoid.

Parameter

Value(s)

Notes

Number of elements

4

Type S1337-1010BR windowless photodiodes from Hamamatsu

Active area [mm]2

49

 

Spectral range [nm]

360-950

 

Spectral responsivity [mA/mW]

0,35-0,7

Depends on wavelength, almost linear up to 950 nm

Quantum efficiency

0,8-0,97

Incl transmittance

Calibration relative uncertainty [%]

0,5

Responsivity calibration

Maximum optical power density [mW/cm2]

5

 

Full field of view [º]*

10

 

Optical path length in the device [mm]*

49

Distance from the first reflection to the last reflection - 35 mm 

Maximum declination between incoming and transmitted beams [% ]

 0,5

 

Maximum transimttance [% of incoming beam]**

12

@360 nm, depends on polarisation

Minimum transimttance [% of incoming beam]**

0,2

@950 nm,  depends on polarisation

Spatial uniformity of the responsivity [%]

±0,1

Scanned at 632,8 nm

Spatial uniformity of the transmittance [%]

±1

Scanned at 632,8 nm

Dimensions (approx)*:

Diameter [mm]

60

Length [mm]

42

Weight [kg]

0,2

*The given values are illustrative and may depend on the customer specified features of the photodetector

**The values are given for detector modeled as a photodiode with antireflection coating effective thickness 30 nm