Browsing by Author "Escoto, Esmerando"
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- ItemMilliradian precision ultrafast pulse control for spectral phase metrology(Washington, DC : Soc., 2021) Stamm, Jacob; Benel, Jorge; Escoto, Esmerando; Steinmeyer, Günter; Dantus, MarcosA pulse-shaper-based method for spectral phase measurement and compression with milliradian precision is proposed and tested experimentally. Measurements of chirp and third-order dispersion are performed and compared to theoretical predictions. The single-digit milliradian accuracy is benchmarked by a group velocity dispersion measurement of fused silica.
- ItemMulti-millijoule, few-cycle 5 µm OPCPA at 1 kHz repetition rate(Washington, DC : Soc., 2020) von Grafenstein, Lorenz; Bock, Martin; Ueberschaer, Dennis; Escoto, Esmerando; Koç, Azize; Zawilski, Kevin; Schunemann, Peter; Griebner, Uwe; Elsaesser, ThomasA table-top midwave-infrared optical parametric chirped pulse amplification (OPCPA) system generates few-cycle pulses with multi-10 GW peak power at a 1 kHz repetition rate. The all-optically synchronized system utilizes ZnGeP2 nonlinear crystals and a highly stable 2 µm picosecond pump laser based on Ho:YLiF4. An excellent energy extraction is achieved by reusing the pump pulse after the third parametric power amplification stage, resulting in 3.4 mJ idler pulses at a center wavelength of 4.9 µm. Pulses as short as 89.4 fs are achieved, close to only five optical cycles. Taking into account the pulse energy, a record high peak power of 33 GW for high-energy mid-IR OPCPAs beyond 4 µm wavelength is demonstrated. © 2020 OSA - The Optical Society. All rights reserved.