Why there is a difference between spectrometar reading (414 mW/cm2) vs laser power meter (200mw) when laser should not have surface of the beam higher than 1cm2?
@@nesass the spectrometer has to assume an area to make the intensity calculation. The beam is smaller than the sensor, so in reality it may be under-estimating the real intensity. The beam is about 4mm diameter. So that is about 0.125cm^2 area beam. So 200mW/0.125cm^2 = 1,600mW/cm^2
@@gembaredllc9115thank you. Also I would appreciate it if you could perform a penetration test with this laser to see if it can pass through a hand or finger, and also measure the power at the other end.
Why there is a difference between spectrometar reading (414 mW/cm2) vs laser power meter (200mw) when laser should not have surface of the beam higher than 1cm2?
@@nesass the spectrometer has to assume an area to make the intensity calculation. The beam is smaller than the sensor, so in reality it may be under-estimating the real intensity.
The beam is about 4mm diameter. So that is about 0.125cm^2 area beam. So 200mW/0.125cm^2 = 1,600mW/cm^2
@@gembaredllc9115thank you.
Also I would appreciate it if you could perform a penetration test with this laser to see if it can pass through a hand or finger, and also measure the power at the other end.
Which is best, 100mW, 200mW or 300mW? Thanks
100mW generally
what are people/studies using 810 laser for?
@@smarzig everything, it is one of the most popular wavelengths used in Photobiomodulation