Noise Correlation Between the Two Degrees of Freedom of a Mid-Infrared Quantum Cascade Laser Frequency Comb

Atif Shehzad,Pierre Brochard,Kenichi Komagata,Renaud Matthey,Filippos Kapsalidis,Mehran Shahmohammadi,Mattias Beck,Andreas Hugi,Pierre Jouy,Jérôme Faist,Thomas Südmeyer,Stéphane Schilt

Noise Correlation Between the Two Degrees of Freedom of a Mid-Infrared Quantum Cascade Laser Frequency Comb

2020

Atif Shehzad
Pierre Brochard
Kenichi Komagata
Renaud Matthey
Filippos Kapsalidis
Mehran Shahmohammadi
Mattias Beck
Andreas Hugi
Pierre Jouy
Jérôme Faist
Thomas Südmeyer
Stéphane Schilt

We present a detailed frequency noise characterization of a mid-infrared QCL comb with separate investigations of an optical line, the mode spacing and the offset frequency, and show strong anti-correlation between the two free-running comb parameters.

Keywords:

mid infrared
two degrees of freedom
Optics
Quantum cascade laser
Frequency comb
Physics
noise correlation

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