Focusable 4W 808nm 810nm Infrared IR Laser Diode Module + 5V Power Supply TTL
1.This is high power laser. Please handle it in professional way.
2.This is Lab Customized items so the outlook may be different from the picture sample but all other data are the same.
Specification
Wavelength:808nm
Operating mode:CW
Output power:＞3.8W
Spatial mode:Near TE00
Longitudinal mode:Multi
Spectral linewidth:0.15nm
Polarization:Linear vertical
Polarization ratio:>50:1
Beam quality:M2<20
Beam divergence full angle:5mrad
Beam diameter at aperture:3mm-3mm
Noise:<5% 10Hz-50MHz
Power stability:5% over 8 hrs rms
Warm-up time:5 mintues
Operating temperature:10-35C
Storage temperature: -20-60C(<90% relative humidity, non-condensing)
Expected life time:10,000 hours
Warranty time:1 year
The spectral linewidth, it is an essential characteristic for single-mode laser diodes and can be given by multiplying the Schawlow Townes equation by the constant term (1 + +-2) and expressed using the following equation:A = gn sp / 4 p 1 + +-2 .
The irreducible divergence (full angle) is given by the expression 4M2/d where d is the diameter of the laser beam measured at its waist. For reasons given above, this figure is often lower than the raw divergence of the laser beam itself.
