We report a spectroscopic method using coherent random lasers for a simple, yet nanoscale, sensing approach. Unique spectral properties of coherent random laser emission can be detectably altered when introducing nanoscale perturbations to a simple nanocomposite film that consists of dielectric nanospheres and laser-dye-doped polymer to serve as a transducer. Random lasing action provides a means to amplify subtle perturbations to readily detectable spectral shifts in multiple discrete emission peaks. Owing to several advantages, such as large-area detection, narrow and multiple emission peaks, straightforward detection, and simple fabrication, random laser spectroscopy has the potential for ultrasensitive, yet simple, biosensors in various applications.
© 2010 Optical Society of AmericaFull Article | PDF Article
Sara García-Revilla, Marcos Zayat, Rolindes Balda, Mohammad Al-Saleh, David Levy, and Joaquín Fernández
Opt. Express 17(15) 13202-13215 (2009)
Elsa Leite, Izabela Naydenova, Svetlana Mintova, Louis Leclercq, and Vincent Toal
Appl. Opt. 49(19) 3652-3660 (2010)
Qinghai Song, Zhengbin Xu, Seung Ho Choi, Xuanhao Sun, Shumin Xiao, Ozan Akkus, and Young L. Kim
Biomed. Opt. Express 1(5) 1401-1407 (2010)