Abstract.
We have characterized the spectroscopic properties of one of the first samples of blue-emitting diode lasers based on GaN. With such a laser diode operated inside a standard extended cavity arrangement we find a mode-hop free tuning range of more than 20 GHz and a linewidth of 10 MHz. Doppler-free spectroscopy on an indium atomic beam reveals the isotope shift between the two major indium isotopes as well as efficient optical pumping.
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Received: 8 November 1999 / Revised version: 31 January 2000 / Published online: 8 March 2000
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Leinen, H., Glässner, D., Metcalf, H. et al. GaN blue diode lasers: a spectroscopist’s view. Appl Phys B 70, 567–571 (2000). https://doi.org/10.1007/s003400050863
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DOI: https://doi.org/10.1007/s003400050863