14 March 2016 Evolution of the Novalux extended cavity surface-emitting semiconductor laser (NECSEL)
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Abstract
Novalux Inc was an enterprise founded by Aram Mooradian in 1998 to commercialise a novel electrically pumped vertical extended cavity semiconductor laser platform, initially aiming to produce pump lasers for optical fiber telecommunication networks. Following successful major investment in 2000, the company developed a range of single- and multi-mode 980 nm pump lasers emitting from 100-500 mW with excellent beam quality and efficiency. This rapid development required solution of several significant problems in chip and external cavity design, substrate and DBR mirror optimization, thermal engineering and mode selection. Output coupling to single mode fiber was exceptional. Following the collapse of the long haul telecom market in late 2001, a major reorientation of effort was undertaken, initially to develop compact 60-100 mW hybrid monolithically integrated pumplets for metro/local amplified networks, then to frequency-doubled blue light emitters for biotech, reprographics and general scientific applications.

During 2001-3 I worked at Novalux on a career break from University College Cork, first as R&D Director managing a small group tasked with producing new capabilities and product options based on the NECSEL platform, including high power, pulsed and frequency doubled versions, then in 2002 as Director of New Product Realization managing the full engineering team, leading the transition to frequency doubled products.
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John Gerard McInerney, John Gerard McInerney, } "Evolution of the Novalux extended cavity surface-emitting semiconductor laser (NECSEL)", Proc. SPIE 9734, Vertical External Cavity Surface Emitting Lasers (VECSELs) VI, 973403 (14 March 2016); doi: 10.1117/12.2217769; https://doi.org/10.1117/12.2217769
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