Frequency-doubled DBR-tapered diode laser for direct pumping of Ti:sapphire lasers generating sub-20 fs pulses.
Müller A, Jensen OB, Unterhuber A, Le T, Stingl A, Hasler KH, Sumpf B, Erbert G, Andersen PE, Petersen PM. Opt Express. 2011 Jun 20; 19(13):12156-63.