Patent ID: 8717665

Claim:
An optical device for wavelength conversion, the device being adapted to receive as input at least a first coherent light beam, referred to as a first pump beam, at a first wavelength (λ 1 ), and to emit at least one coherent light beam, referred to as an outlet beam, at a wavelength (λ s ) that is different from said first wavelength, the device comprising: an optical cavity (CE); an optically non-linear medium (CNL) located inside the optical cavity and suitable for interacting with said first pump beam to generate said outlet beam; and a servo-control system (BA 1 ) for servo-controlling a resonance mode of said optical cavity at said first wavelength; the device being characterized in that said servo-control system is adapted to receive as input a first signal (s 1 ) representative of the energy stored in the cavity at said first wavelength, and a second signal (s 2 ) representative of the power of the outlet beam emitted by the cavity; and to output a servo-control signal (s a ) for servo-controlling the resonant wavelength of said optical cavity.