2026-04-13T04:59:27Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/267572025-07-17T00:31:32Zcom_2072_1033col_2072_452950

Two-crystal, synchronously pumped, femtosecond optical parametric oscillator Ramaiah-Badarla, V. Esteban-Martin, A. Ebrahim-Zadeh, Majid Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica::Fotònica Optical parametric oscillators Ultrafast nonlinear optics Parametric oscillators and amplifiers Fotònica We demonstrate a femtosecond optical parametric oscillator based on two nonlinear crystals synchronously pumped by a single ultrafast laser for efficient intracavity signal amplification and output power enhancement. By deploying two identical MgO:PPLN crystals in a single standing-wave cavity, and two pump pulse trains of similar average power from the same Kerr-lens-mode-locked Ti:sapphire laser, a minimum enhancement of 56% in the extracted signal power is achieved, with un-optimized output coupling, when temporal synchronization between the two intracavity signal pulse trains is established, resulting in a corresponding enhancement of 49% in pump depletion. Using intracavity dispersion control, near-transform-limited signal pulses with clean spectrum are obtained Peer Reviewed Preprint 2015-02-01 Article http://www.opticsinfobase.org/ol/abstract.cfm?uri=ol-40-3-324 European Office of Aerospace Research and Development (FA8655-12-1-2128) Open Access OSA