The word 'light-produced' is a compound formed in English from 'light' and 'produced', where 'light' refers to visible radiant energy and 'produced' is the past participle of 'produce', meaning 'to bring forth or create'.

'Light-produced' was formed in modern English by combining the noun 'light' and the past participle 'produced', following the pattern of scientific compound adjectives.

Initially, it meant 'produced by light', and this meaning has remained consistent in scientific contexts.