Martin Forrer

Fast axis collimation for high power diode lasers

An industrial concept for high power diode laser collimation with integrated 90° beam deflection in a high index glas material is presented. The solution is proven in production quantity scaling and the optical design has the degree of freedom for the realization of various focal lengths and assembly procedures. This together with the standard high collimation quality offer clear cost advantages for system design and production engineering.

Individual particle handling in a microfluidic system based on parallel laser trapping

We present an optical trapping system combining individually addressable multiple laser traps with fluorescence spectroscopy. An in-line set of 64 near-IR laser diodes is used to create a line of individually addressable traps inside a microfluidic chip. This system is completed by an excitation/detection line for spectrally resolved fluorescence imaging of trapped particles. Highly parallel trapping in a constant flow (up to a few millimeters per second), fast particle handling rates (up to a few particles per second), and the possibility of recording fluorescence spectra of trapped objects lead to a performing bioanalytical platform, e.g., for highly parallel analysis and sorting.