An optical amplifier includes an organic luminescent free radical compound, preferably a salt of a radical cation or a salt of a radical anion, wherein an excited state of the luminescent free radical compound undergoes stimulated emission in an infrared wavelength region, such as 1500 to 1650 nm. Suitable organic luminescent free radical compounds include aminium infrared-absorbing dyes.

Un amplificateur optique inclut un composé luminescent organique de radical libre, de préférence un sel d'un cation radical ou un sel d'un anion radical, où un état passionnant du composé luminescent de radical libre subit l'émission stimulée dans une région infrarouge de longueur d'onde, telle que nm 1500 à 1650. Les composés luminescents organiques appropriés de radical libre incluent les colorants infrarouge-absorbants d'aminium.

 
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