H - Electricity – 01 – S
Patent
H - Electricity
01
S
H01S 3/098 (2006.01) G02F 1/35 (2006.01) H01S 3/131 (2006.01)
Patent
CA 2574111
Method and device for the generation of a comb of stabilized frequency lines and/or a train of ultrashort laser pulses for stabilization of the position of the carrier wave with respect to the amplitude envelope of few cycles laser pulses. Interfer~ence between spectral components generated by means of differ~ence frequency generation and self phase modulation in one and the same non-linear crystal (4) allows detecting and stabilizing the temporal evolution of the carrier-envelope offset (CEO) phase. The described technique improves dramatically the accur~acy of the stabilization and has very small insertion losses.
L'invention concerne un procédé et un dispositif de génération d'un peigne de lignes de fréquence stabilisées et/ou d'un train d'impulsions laser ultracourtes de stabilisation de la position de l'onde porteuse par rapport à l'enveloppe d'amplitude des impulsions laser. L'interférence entre les composantes spectrales obtenues par génération d'une fréquence différentielle et par automodulation de phase dans un même cristal non linéaire (4) permet de détecter et de stabiliser l'évolution temporelle de la phase de décalage enveloppe-porteuse (CEO). Ladite technique permet d'améliorer de manière significative la précision de la stabilisation et provoque très peu de pertes d'insertion.
Fuji Takao
Krausz Ferenc
Femtolasers Produktions Gmbh
Ridout & Maybee Llp
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