InAs/GaAs quantum-dot saturable absorbers for diode-pumped passively Q-switched Nd-doped 1.3-µm lasers

Department of Electrophysics, National Chiao Tung University, Hsinchu, Taiwan.
Optics Letters (Impact Factor: 3.29). 04/2005; 30(5):480-2. DOI: 10.1364/OL.30.000480
Source: PubMed


A low-loss semiconductor saturable absorber based on InAs/GaAs quantum dots was developed for Q switching of a diode-pumped Nd-doped laser operating at 1.3 microm. With an InAs/GaAs quantum-dot saturable absorber, a diode-pumped Nd:YVO4 laser at 1342 nm was achieved. With an incident pump power of 2.2 W, an average output power of 360 mW with a Q-switched pulse width of 90 ns at a pulse repetition rate of 770 kHz was obtained.

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