Gentec-EO PH - Manual (Page 17)

Version 2.3
PH Series Instruction Manual Gentec Electro-Optics Inc. All rights reserved
13
Slope: The slope of the linear interpolation.
Sens
LOW_ λ
: Sensitivity at

LOW
.
Sens
HIGH_ λ
: Sensitivity at

HIGH
.

LOW
: The next lowest available wavelength near your desired wavelength.

HIGH
: The next highest available wavelength near your desired wavelength.

DESIRED
: Desired Wavelength.
 
: The difference between the desired wavelength and the inferior wavelength.
4.5.1 Example
You have a PH100-Si and your laser is at 632.8 nm.
See your CERTIFICATE OF CALIBRATION for the sensitivity of your power detector as a function of
the wavelength.
Wavelength (nm) Sensitivity (A/W)
620 0.32
630 0.35
640 0.37
650 0.40
660 0.43
632.8 nm is between 630 nm and 640 nm therefore,
Sens
LOW_ λ
= 0.35 A/W
Sens
HIGH_ λ
= 0.37 A/W

LOW
= 630 nm

HIGH
= 640 nm
 
: 632.8 - 630 = 2.8 nm
Slope: (0.37-0.35)/(640-630) = 0.002
Sensitivity
desired_

: 0.35 + 2.8 * 0.002= 0.356 A/W