White light lasers

Rose, CS, McDonald, GS and Christian, JM 2010, White light lasers , in: SEE Celebration of Research, 30th June 2011, University of Salford, Greater Manchester, UK.

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Abstract

Broadband multiline frequency combs present a wealth of applications, ranging from meteorology, sensing and measurements to those potentially in the domain of attosecond science. We report here on detailed investigations of a novel process that is accompanied by extreme enhancement of the bandwidth of the generated frequencies – resulting in a novel white light laser source. Cavity contexts where efficient broadband multiline generation have been reported include spherical micro-cavities [1], monolithic micro-resonators [2] and so-called ‘bottle micro-resonators’ [3], in which the cavity quality to mode volume ratio ( Q / V ) plays a dominant role in the characteristics of the device and its constituent whispering gallery modes. Typically, maximum quality and low volume lead to the optimal condition of high Q / V. To illustrate distinctiveness from these well-known contexts, we stress that the effects we report can be optimal in either low-Q resonators (with very moderate reflectivities) or larger volume cavities (e.g. with longer cavity lengths).

Item Type:	Conference or Workshop Item (Poster)
Themes:	Energy Media, Digital Technology and the Creative Economy Subjects outside of the University Themes
Schools:	Schools > School of Computing, Science and Engineering > Salford Innovation Research Centre
Refereed:	Yes
Depositing User:	JM Christian
Date Deposited:	17 Oct 2011 15:06
Last Modified:	10 Aug 2017 01:44
References:	[1] Spillane S M, Kippenberg T J and Vahala K J, Nature 415, 621 (2002). [2] Del’Haye P et al, Nature 450, 1214 (2007). [3] Pollinger M et al, Phys. Rev. Lett. 103, 053901 (2009).
URI:	http://usir.salford.ac.uk/id/eprint/18444

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