An integrated intra-laser-cavity microparticle sensor based on a dual-phase-shift, dual-wavelength distributed-feedback channel waveguide laser in Al2O3:Yb3+ is presented. Real-time detection and accurate size measurement of single microparticles with diameters ranging between 1 μm and 20 μm are achieved, which represent the typical sizes of many fungal and bacterial pathogens as well as a large variety of human cells. The sensing principle relies on measuring changes in the frequency difference between the two longitudinal laser modes, as the evanescent field of the dual-wavelength laser interacts with micro-sized particles on the surface of the waveguide.

© 2013 IEEE

PDF Article
More Like This
Evanescent-Field Intra-Cavity Sensing with a Dual-Wavelength Distributed-Feedback Laser

E. H. Bernhardi, K. O. van der Werf, A. J. F. Hollink, K. Wörhoff, R. M. de Ridder, V. Subramaniam, and M. Pollnau
CM3B.5 CLEO: Science and Innovations (CLEO_SI) 2012

Dual-wavelength Narrow-linewidth Lasers and Their Applications

Markus Pollnau, Edward H. Bernhardi, Kerstin Wörhoff, and Réne M. de Ridder
ATu1A.6 Advanced Solid State Lasers (ASSL) 2013

Stable Microwave Generation in a Dual-Phase-Shifted Al2O3:Yb3+ Distributed-Feedback Waveguide Laser

E. H. Bernhardi, H. A. G. M. van Wolferen, K. Wörhoff, R. M. de Ridder, and M. Pollnau
AM5A.6 Advanced Solid-State Photonics (ASSP) 2012


You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access OSA Member Subscription