Modelocked quantum dot vertical external cavity surface emitting laser

• Published in: Applied physics. B, Lasers and optics Vol. 93; no. 4; pp. 733 - 736
• Main Authors: Hoffmann, M., Barbarin, Y., Maas, D. J. H. C., Golling, M., Krestnikov, I. L., Mikhrin, S. S., Kovsh, A. R., Südmeyer, T., Keller, U.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer-Verlag 01-12-2008; Springer
• Subjects: Biological and medical applications; Emission; Engineering; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Gain; Holes; Laser spectroscopy; Lasers; Optical Devices; Optics; Photonics; Physical Chemistry; Physics; Physics and Astronomy; Quantum dots; Quantum Optics; Rapid Communication; Repetition; Semiconductor lasers; laser diodes; Surface emitting lasers; Wavelengths; 42.55.Px; 42.60.Fc; Vertical cavity laser; Semiconductor lasers; Output power; Laser mode locking; Quantum dots; High repetition rate; Surface emitting lasers; Optical pumping; Autocorrelations; ps range
• ISSN: 0946-2171; 1432-0649
• DOI: 10.1007/s00340-008-3267-0

We report the first successful modelocking of a vertical external cavity surface emitting laser (VECSEL) with a quantum dot (QD) gain region. The VECSEL has a total of 35 QD-layers with an emission wavelength of about 1060 nm. In SESAM modelocked operation, we obtain an average output power of 27.4 mW with 18-ps pulses at a repetition rate of 2.57 GHz. This QD-VECSEL is used as-grown on a 450 μm thick substrate, which limits the average output power.