Compact all-diode-pumped femtosecond laser source based on chirped pulse optical parametric amplification in periodically poled KTiOPO/sub 4/

Optical Parametric Generators and Amplifiers

“…The FWHM pulsewidth of 210 fs has been generated. At the same time, experiments on optical parametric chirped pulse amplification in PPKTP [73,74] and PPsLT [75], using 1.064 µm pumping and a broadband seed at 1.57 µm (3.3 µm idler), have clearly shown the gain-bandwidth limitation, which did not allow the generation of pulses shorter than about 300 fs in 5 mm-long crystals. Similar bandwidth limitation has been observed in PPLN OPG pumped at 0.777 µm [76].…”

Ultra-broadband optical parametric generation in periodically poled stoichiometric LiTaO_3

“…The low coercive field of Mg:SLT, which is somewhat below that of KTP and one order of magnitude lower than that of LiNbO 3 , also permits up-scaling of device apertures to millimetre sizes [15]. Recent results in periodically poled Mg:SLT (PPMg:SLT) [16] proved a performance comparable to that of PPKTP for high gain single stage OPCPA, for ultra-short pulses near 1.57 μm [17]. Somewhat larger spectral extents (~40 THz) have been attained for Ti:sapphirepumped OPG in PPSLT, yet with a working point still far away from zero GVD [18].…”