caa a22 4500 445371684 CHVBK 20180317142949.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1007/s00340-010-4333-y doi (NATIONALLICENCE)springer-10.1007/s00340-010-4333-y Efficient injection-seeded kHz picosecond LBO optical parametric generator [Elektronische Daten] [T. Traub, F. Ruebel, J. L'huillier] We report a highly efficient optical parametric generator (OPG) in lithium triborate (LBO). Afrequency-doubled passively mode-locked diode-pumped Nd:YVO4 oscillator amplifier (MOPA) system is used as the pump radiation source. Focussing according to the theory of Boyd and Kleinman leads to a pump power density of 50GW/cm2, which is well below the damage threshold of LBO of 80GW/cm2. The overall conversion efficiency reaches a value of 72% measured at degeneracy. The tuning range of the OPG ranges from 760nm (signal) to 1770nm (idler) when referring to an overall conversion efficiency of 50%. The beam quality is excellent for conversion efficiencies below 40% (M 2<1.3). The typically 10nm (RMS) broad spectrum can be narrowed by injection seeding the OPG. Injection seeding is demonstrated for a signal wavelength of 922.54nm. A seed cw power of 30nW is sufficient to reduce the spectral width to 0.1nm (RMS). The measured injection-seeded OPG pulse duration is 9ps (FWHM). This results in a time-bandwidth product of 1.30, which is 4.1 times the theoretical limit of 0.315 for sech2-shaped pulses. Springer-Verlag, 2010 Traub T. Photonik-Zentrum Kaiserslautern e.V., Kohlenhofstr. 10, 67663, Kaiserslautern, Germany aut Ruebel F. Photonik-Zentrum Kaiserslautern e.V., Kohlenhofstr. 10, 67663, Kaiserslautern, Germany aut L'huillier J. Photonik-Zentrum Kaiserslautern e.V., Kohlenhofstr. 10, 67663, Kaiserslautern, Germany aut Applied Physics B Springer-Verlag 102/1(2011-01-01), 25-29 0946-2171 102:1<25 2011 102 340 https://doi.org/10.1007/s00340-010-4333-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00340-010-4333-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Traub T. Photonik-Zentrum Kaiserslautern e.V., Kohlenhofstr. 10, 67663, Kaiserslautern, Germany aut NATIONALLICENCE 700 1- Ruebel F. Photonik-Zentrum Kaiserslautern e.V., Kohlenhofstr. 10, 67663, Kaiserslautern, Germany aut NATIONALLICENCE 700 1- L'huillier J. Photonik-Zentrum Kaiserslautern e.V., Kohlenhofstr. 10, 67663, Kaiserslautern, Germany aut NATIONALLICENCE 773 0- Applied Physics B Springer-Verlag 102/1(2011-01-01), 25-29 0946-2171 102:1<25 2011 102 340 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer