Gentec-EO Accessories for Beam Diagnostics - Manual (Page 16)

Accessories for Beam Diagnostics Revision 1.2 16
4.2. IR ADAPTOR
The IR Adaptor takes advantage of a multi-photon absorption process to extend the sensitivity of the Beamage-
3.0 beam profiling camera to a portion of the near-IR spectrum.
The module converts wavelengths ranging between 1495 nm and 1595 nm (telecom wavelengths band) to
shorter wavelengths ranging between 950 nm and 1075 nm.
After going through an anti-reflection coated input window, the laser beam gets instantaneously converted with
high resolution, low distortion and good uniformity.
The IR Adaptor can be C-mounted onto the entrance port of the Beamage-3.0 camera.
Figure 10: IR Adaptor
Table 9: IR Adaptor Specifications
Active Area 27.5 mm Ø
IR Spectral Range 1495 nm – 1595 nm
Peak IR Sensitivity 1510 nm and 1540 nm
Converted Wavelengths 950 nm – 1075 nm
Pixel Multiplication Factor 3.29
Minimum Beam Size 230 µm
Maximum Beam Size 19 mm
Maximum Resolution 12 lp/mm over active area
40 lp/mm at sensor focal plane
Distortion -1.0% barrel distortion (inverted image)
Linearity Non-Linear, IR converted output
∝ IR input
intensity ^1.41
Spectral Transmission 360 nm – 2000 nm @ F30.8
Damage Threshold 1 W/cm
2
Dimensions 46 mm Ø x 97 mm L
Operating Temperature -10°C to +40°C
Weight 210 g
Part Number 201061