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Crystalline microresonators for mid-IR laser stabilization.

Borri S., Siciliani de Cumis M., Insero G., Bartalini S., Cancio Pastor P., Mazzotti D., Galli I., Giusfredi G., Santambrogio G., D'Ambrosio D., Savchenkov A., Eliyahu D., Ilchenko V., Matsko A., Maleki L., De Natale P.
  Mercoledì 28/09   10:00 - 13:00   Edificio Psicologia 2 - Aula 2B   II - Fisica della materia
Narrow-linewidth lasers are key elements in optical metrology and spectroscopy. From their spectral purity the measurements accuracy and the overall quality of collected data critically depend. Crystalline microresonators have undergone an impressive development in the last decade, opening new ways to photonics at the mm to $\mu$m scale. Their wide transparency range and high $Q$-factor make them suitable for integration in compact apparatuses for precision spectroscopy in the visible to the mid-IR. Here we present our recent results on frequency stabilization and linewidth narrowing of quantum cascade lasers using crystalline Whispering Gallery Mode Resonators for mid-IR precision spectroscopy.