We demonstrate a silicon diffractive element that serves as an optical tweezer in the near infrared and as a fluorescence collector in the visible. The 1.3 NA lens is achromatic and has high diffraction efficiency.

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Conference Conference on Lasers and Electro-Optics, CLEO 2009
Schonbrun, E. (E.), Ye, W.N, & Crozier, K.B. (K. B.). (2009). Optical trapping and fluorescence collection using a dualwavelength diffractive optic. In Optics InfoBase Conference Papers.