Can anyone give me the definitions for the following laser terminology? These tend to be used on datasheets and I can't seem to find much discussion / use of them elsewhere:
- Parallel Beam Divergence
- Perpendicular Beam Divergence
I'm pretty sure these give some kind of half angle for the beam divergence straight out of the diode (without any collimation optics), but I'm not totally sure why there need to be two terms for it and why they are never the same (they must have slightly different geometric definitions and maybe someone can explain them?).
Then there's also:
- Parallel Deviation Angle
- Perpendicular Deviation Angle
Same as before. I assume these are maybe something like the angle variability of the laser beam itself coming out of the diode?
Then last there's:
- Emission Point Accuracy
Is this like the accuracy of the die inside the can relative to the center?
- Parallel Beam Divergence
- Perpendicular Beam Divergence
I'm pretty sure these give some kind of half angle for the beam divergence straight out of the diode (without any collimation optics), but I'm not totally sure why there need to be two terms for it and why they are never the same (they must have slightly different geometric definitions and maybe someone can explain them?).
Then there's also:
- Parallel Deviation Angle
- Perpendicular Deviation Angle
Same as before. I assume these are maybe something like the angle variability of the laser beam itself coming out of the diode?
Then last there's:
- Emission Point Accuracy
Is this like the accuracy of the die inside the can relative to the center?