Inter-intramode correlation spectroscopy: A new experimental technique to study mode interaction in semiconductor lasers

Elsässer, W.
May 1986
Applied Physics Letters;5/19/1986, Vol. 48 Issue 20, p1323
Academic Journal
A new experimental method to study modal interaction in semiconductor lasers is presented. The inter-intramode correlation spectroscopy investigates correlations between intensity and phase fluctuations having their origin in different longitudinal modes. First results for GaAs/(GaAl)As multimode lasers reveal correlated frequency fluctuations of the total longitudinal mode comb. Refractive index fluctuations and intermode coupling are discussed as the origin for these intramodal fluctuations.


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