Integrated optical systems for excitation delivery and broadband detection in microfluidic electrochromatography

Shanalyn A. Kemme; Mial E. Warren; William C. Sweatt; Joel R. Wendt; Christopher A. Bailey; Carolyn M. Matzke; Andrew A. Allerman; D. W. Arnold; T. R. Carter; Randolph E. Asbill; S. Samora

doi:10.1117/12.384415

27 April 2000 Integrated optical systems for excitation delivery and broadband detection in microfluidic electrochromatography

Shanalyn A. Kemme, Mial E. Warren, William C. Sweatt, Joel R. Wendt, Christopher A. Bailey, Carolyn M. Matzke, Andrew A. Allerman, D. W. Arnold, T. R. Carter, Randolph E. Asbill, S. Samora

Author Affiliations +

Proceedings Volume 3952, Optoelectronic Interconnects VII; Photonics Packaging and Integration II; (2000) https://doi.org/10.1117/12.384415
Event: Symposium on Integrated Optoelectronics, 2000, San Jose, CA, United States

Abstract

We have designed and assembled two generations of integrated micro-optical systems that deliver pump light and detect broadband laser-induced fluorescence in micro-fluidic separation systems employing electrochromatography. The goal is to maintain the sensitivity attainable with larger, tabletop machines while decreasing package size and increasing throughput. One type of micro-optical system uses vertical-cavity surface-emitting lasers (VCSELs) as the excitation source. Light from the VCSELs is relayed with four-level surface relief diffractive optical elements (DOEs) and delivered to the chemical volume through substrate-mode propagation. Indirect fluorescence from dye- quenched chemical species is collected and collimated with a high numerical aperture DOE. A filter blocks the excitation wavelength, and the resulting signal is detected as the chemical separation proceeds. Variations of this original design include changing the combination of reflective and transmissive DOEs and optimizing the high numerical aperture DOE with a rotationally symmetric iterative discrete on-axis algorithm. We will discuss the result of these implemented optimizations.

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Shanalyn A. Kemme, Mial E. Warren, William C. Sweatt, Joel R. Wendt, Christopher A. Bailey, Carolyn M. Matzke, Andrew A. Allerman, D. W. Arnold, T. R. Carter, Randolph E. Asbill, and S. Samora "Integrated optical systems for excitation delivery and broadband detection in microfluidic electrochromatography", Proc. SPIE 3952, Optoelectronic Interconnects VII; Photonics Packaging and Integration II, (27 April 2000); https://doi.org/10.1117/12.384415

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