HOHENHEIDE OÜ

Three-element detector

HH03-S1337 dimension

outer dimensions, mm

 principle beam journey

principle beam journey

3-element reflection photodetector

HH03-S1337

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This device is designed on the basis of quality photodiodes. Three photodiodes are rotated by angle 45° along each normal axis minimizing the distances between centres of diodes. As the result, the photodiodes are arranged in polarization-independent configuration to reduce back-reflection from the device more than 100 times as compared to a one-element photodetector. The active area forms 50% of a single photodiode used in the detector. Typical applications arein the measurements of optical power at high level of accuracy in wide spectral range.

Parameter

Value(s)

Notes

Number of elements

3

Type S1337-1010BR windowless photodiodes from Hamamatsu

Active area [mm]2

54

 

Spectral range [nm]

360-950

 

Spectral responsivity [mA/mW]

0,35-0,7

depends on wavelength, almost linear up to 950 nm

Quantum efficiency

0,97

incl reflectance

Calibration relative uncertainty [%]

0,5

responsivity calibration

Maximum optical power density [mW/cm2]

5

 

Full field of view [º]*

15

 

Optical path length in the device [mm]*

79

Distance from the first reflection to the last reflection ~45 mm

Maximum back-reflection [% of incoming beam]**

 

@360 nm

Minimum back-reflection [% of incoming beam]**

0,2

@950 nm

Spatial uniformity of the responsivity [%]

±0,1

Scanned at 632,8 nm

Dimensions (approx)*:

Diameter [mm]

60

Length [mm]

48

Weight [kg]

0,2

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

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