Randon lasers for lab-on-chip applications
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2015
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LASER SOURCES AND APPLICATIONS, 3rd
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Random lasers are laser sources in which the feedback is provided by scattering instead of reflection and which, for
this reason, do not require surfaces with optical finish such as mirrors. The investigation of such lasing action in a
large variety of disordered materials is a subject of high interest with very important applications such as threedimensional
and speckle-free imaging, detection of cancer tissue and photonic coding and encryption. However,
potential applications require optimization of random laser performance especially with respect to optical efficiency
and directionality or brightness. This work demonstrates such an optimization procedure with the goal of achieving a
random laser with sufficient efficiency and brightness in order to be used in practical applications. Two random
lasers are demonstrated, one solid and on liquid, that fulfil directionality and efficiency requirements. The first one
consists of a neodymium doped powder laser with a record slope efficiency of 1.6%. The second one is a liquid
random laser injected into a HC-ARROW waveguide which uses a microchannel connected to a much larger
reservoir in order to achieve the necessary directionality. Both devices can be produced by low cost fabricating
technologies and easily integrated into next-generation, lab-on-chip devices used for in-situ determination of
infectious tropical diseases, which is the main goal of this project.
Como referenciar
GIEHL, J.M.; BUTZBACK, F.; JORGE, K.C.; ALVARADO, M.A.; CARRENO, M.N.P.; ALAYO, M.I.; WETTER, N.U. Randon lasers for lab-on-chip applications. In: MACKENZIE, JACOB I. (ed.); JELLNKOVA, HELENA (ed.); TAIRA, TAKUNORI (ed.); AHMED, MARWAN A. (ed.). In: LASER SOURCES AND APPLICATIONS, 3rd, August 16, 2015. Proceedings... p. 989314-1 - 989314-8. (SPIE Proceedings Series, 9893). Disponível em: http://repositorio.ipen.br/handle/123456789/26767. Acesso em: 26 Apr 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.