@inproceedings{a205584f5fb34c4687995276ecbf287b,
title = "Single-frequency 571nm VECSEL for photo-ionization of magnesium",
abstract = "We report the development of an intracavity-frequency-doubled vertical external-cavity surface-emitting laser (VECSEL) emitting at 571 nm for photoionization of magnesium. The laser employs a V-cavity geometry with a gain chip at the end of one cavity arm and a lithium triborate (LBO) crystal for second harmonic generation. The gain chip has a bottom-emitting design with ten GaInAs quantum wells of 7 nm thickness, which are strain compensated by GaAsP. The system is capable of producing up to 2.4 ± 0.1 W (total power in two separate output beams) in the visible. The free-running relative intensity noise was measured to be below −55 dBc/Hz over all frequencies from 1 Hz to 1 MHz. With acoustic isolation and temperature regulation of the laser breadboard, the mode-hop free operation time is typically over 5 hrs. To improve the long-term frequency stability, the laser can be locked to a Doppler-free transition of molecular iodine. To estimate the short-term linewidth, the laser was tuned to the resonance of a reference cavity. From analysis of the on-resonance H{\"a}nsch-Couillaud error signal we infer a linewidth of 50 ± 10 kHz. Light at 285 nm is generated with an external build-up cavity containing a β-barium borate (BBO) crystal. The UV light is used for loading 25Mg+ ions in a surface-electrode RF Paul trap. These results demonstrate the applicability and versatility of high-power, single-frequency VECSELs with intracavity harmonic generation for applications in atomic and molecular physics. ",
keywords = "VECSEL, OPSL, SDL, frequency doubling, SHG, ion trapping, single-frequency, photoionization, doppler-free spectroscopy, magnesium",
author = "S.C. Burd and T. Leinonen and J.P. Penttinen and D.T.C. Allcock and D.H. Slichter and R. Srinivas and A.C. Wilson and M. Guina and D. Leibfried and D.J. Wineland",
note = "JUFOID=71479; SPIE Photonics West ; Conference date: 01-01-1900",
year = "2016",
month = jun,
day = "2",
doi = "10.1117/12.2213398",
language = "English",
volume = "9734",
series = "SPIE Conference Proceedings",
publisher = "SPIE",
booktitle = "Proceedings of SPIE",
address = "United States",
}