A Ring-Cavity Diode Laser

Jianing Han, Lindsay Hutcherson, Kaori Munekane, Steven Shettlesworth

Physics Department, University of South Alabama, Mobile, AL, USA.

DOI: 10.4236/jmp.2020.118077                

Abstract

In this article, we report on a ring-cavity diode laser configuration, which has more features compared to the standing-wave external-cavity diode lasers. First, a transmission grating will be used, and the ring-cavity laser output will be the zero-order output from the transmission grating. Therefore, unlike the standing-wave external cavity diode lasers, the output direction of this ring-cavity laser does not depend on the laser's frequency. Second, since it is a ring-cavity laser, it can avoid the local heating caused by the antinodes of the standing-wave lasers. Moreover, because this ring-cavity will allow the laser beam to pass the transmission grating two times, it is expected that this will ultimately result in a narrower linewidth compared to the external-cavity standing-wave lasers with the same cavity length.

Keywords

PACS Numbers: 07.05.Fb, 42.15.Eq, 42.55.Px

Conflicts of Interest

The authors declare no conflicts of interest regarding the publication of this paper.

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