IC212 Datasheet, PDF (8/15 Pages) IC-Haus GmbH – HIGHSPEED PHOTORECEIVER

iC212
HIGHSPEED PHOTORECEIVER
preliminary
Rev A2, Page 8/15
Measurment of Irradiance E
1. Put laser in CW mode
2. Homogenisation of laser light with microlens ar-
rays (Fig. 10)
3. Put iC212 into the center of the homogenised
laser light (Fig. 11)
4. Read oscilloscope: U = 76 mV (Fig. 12)
Calculation: λ = 659 nm, spectral response taken
from Figure 4: S(@659 nm) = 1.42 V/mW, effec-
tive area (Item No. 302: Aeff = 0.75 mm²)
6. With a sensor area of 100 mm² this results in
E(Newport) = 0.0644 mW/mm²
The results match within 10%.
U
E(iC212) =
S ∗ A_eff
0.076 V
mW
=
1.42
V
mW
∗ 0.75 mm²
= 0.071 _mm2
Figure 11: iC212 in the center of the homogenised
laser light
Figure 9: Laser 659 nm, 150 mW with two mi-
crolens arrays for homogenisation
Figure 12: Oscilloscope reading
Figure 10: Homogeneously illuminated area of ca.
4 cm x 4 cm
5. Put Newport sensor into laser beam and read the
power: P_opt(Newport) = 6.441 mW (Fig. 13)
Figure 13: Newport sensor in the center of the ho-
mogenised laser light