Some applications of an argon ion laser in forensic science

A two watt argon ion laser has been in use in the Metropolitan Police Laboratory for about six months. During this time it has been applied to a number of cases with considerable success. Shoeprints, fingerprints, erased writing, differences in inks, transfer of inks to other surfaces, stains on clothing, differences in paints, fibres and interference patterns in glass have all been either detected or enhanced when conventional techniques have failed.