A laser is basically a device that converts energy of some form (electrical, chemical, heat, etc.) into photons (electromagnetic radiation).
(A laser; is basically; a device that converts energy of some form (electrical, chemical, heat, etc.) into photons (electromagnetic radiation)) (a device; converts; energy of some form (electrical, chemical, heat, etc.; into photons)
A laser a device
is basically converts
a device that converts energy of some form (electrical, chemical, heat, etc.) into photons (electromagnetic radiation)
energy of some form (electrical, chemical, heat, etc. into photons