Experimental study of the influence of variable external optical feedback on visible laser diode speckle

Christopher Evered, Kang Li, Yuanlong Fan

Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

Crynodeb

This study employs an experimental setup with a variable feedback fraction (fext), external cavity length (ECL), and pump current (J) to investigate their relationships with optical linewidth and external optical feedback-induced speckle contrast (SC) reduction in a visible laser diode. In total, speckle contrast and optical linewidth data for seven feedback fractions, two pump currents, and three external cavity lengths were collected. Achieving optical linewidths up to 3.90 nm (1/e2 width) and a reduction in speckle contrast of up to 41.6%, we also revealed negative correlations between speckle contrast and optical linewidth, and speckle contrast and feedback fraction, and a positive correlation between optical linewidth and feedback fraction.
Iaith wreiddiolSaesneg
Tudalennau (o-i)3524-3527
CyfnodolynOptics Letters
Cyfrol49
Rhif cyhoeddi12
Dyddiad ar-lein cynnar4 Meh 2024
Dynodwyr Gwrthrych Digidol (DOIs)
StatwsCyhoeddwyd - 14 Meh 2024

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