Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers





How lasers work: https://tinyurl.com/yawyaqoq

Online mRad divergence calculator, measure output beam diameter and then spot diameter at a distance, input numbers: https://www.laserworld.com/en/laserworld-toolbox/specify-laser-divergence.html

Beam divergence calculator - you can clearly see the importance if the distance is increased: https://www.laserworld.com/en/laserworld-toolbox/divergence-calculator.html

Online Relative Brightness Calculator:

Pulsed Laser Peak Power Calculator (YAG etc.): https://www.ophiropt.com/laser--measurement/laser-power-energy-meters/services/peak-power-calculator

Cheap way to measure wavelength: https://tinyurl.com/Measuring-wavelength-cheap

If building a low divergence fat beam pointer, what diameter lens do you need for a given distance from your diode? Find the angle of radiation for the raw output of the diode and determine the size needed at a given FL: https://planetcalc.com/1897/

How to build a laser beam expander:


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