Open Access9.5 dB relative intensity noise reduction in quantum cascade laser by detuned loading
Author(s) -
Juretzka C.,
Breuer S.,
Drzewietzki L.,
Schad F.,
Carras M.,
Elsäßer W.
Publication year - 2013
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2013.2366
Subject(s) - cascade , relative intensity noise , reduction (mathematics) , quantum cascade laser , intensity (physics) , noise (video) , optics , laser , physics , phase noise , quantum noise , noise reduction , quantum , materials science , atomic physics , semiconductor laser theory , quantum mechanics , acoustics , mathematics , chemistry , computer science , geometry , chromatography , artificial intelligence , image (mathematics)
The possibility of reducing the relative intensity noise (RIN) of a quantum cascade laser is demonstrated. By phase‐dependent optical feedback from a short, piezo‐controlled external cavity configuration, it is possible to achieve up to 9.5 dB of RIN reduction. These findings are consistently explained by a detuned loading approach based on modifying the alpha parameter.