OPHIR BeamSquared - Page 14

Attenuation
Attenuation Range
Nominally from ND 1.0 to ND 4.8. Actual values vary with wavelength.
Optical Limits
Wavelength Range
266-1700nm limited by camera.
The CCD camera is operational from 266 to 1100nm. InGaAs camera operates
from 900 to 1700nm.
Beam Size
BeamSquared Auto Mode 1mm – 10mm.
BeamSquared Manual Mode 1mm – 20mm.
Varies with wavelength, waist size, location, and M
2
. See section 5.4.3.
Damage Limits
CCD Camera*
.15 mW/cm
2
CW mode
1.0 μJ/cm
2
pulse mode
Both of the above for an M
2
=1 @ 1064nm
* WARNING! CCD cameras can be damaged by power in excess of .15 mW/cm
2
or energy in excess
of 1 μJ/cm
2
. BeamSquared employs a focusing optic. While it may be that the laser input power or
energy density measures well below this damage threshold, it can easily exceed these levels when
focused onto the camera sensor. Use caution and err on the side of safety. CCD cameras are costly
to repair or replace.
General
Accuracy
±5% typical
(Note: Accuracy can be degraded by a variety of situations, consult text.)
Measurement Cycle Time
< 1 minute typical, depending on setup conditions and operating mode.
CCD Camera Attachment
Standard C-mount, 90° camera on axis rotation
Translation System
Step motor-driven ball screw
Translation Stage Resolution
.05mm
Refer to the Pyrocam user guide or the Ophir-Spiricon website for camera specific specifications.
The following descriptions assume operations in Auto mode. Instructions that are specific to
operating in Manual mode are indicated by a symbol.