Micro-optical elements functioning in non-visible spectral range

Abstract

Nowadays novel micro-fabrication and wafer-based manufacturing approach allows realizing micro-optics in a way scientists have dreamt for generations, in particular, utilizing nano-imprint lithography as fabrication tooling enables greatly accelerating the micro-optics technology to its frontier. In this report, we present wafer-scale fabrication of various types of micro-optical elements based on photoresist, benzocyclobutene, photocurable imprint resist, and semiconductor materials by using thermal reflow, reactive ion etching, and imprint techniques. Especially, several concave or convex 3-dimensional micro-optical structures shaped by imprint method are detailed. These micro-optical elements can be monolithically or hybrid integrated onto optoelectronics devices, such as photodetectors and emitters as optical beam focuser, collimator, filter, or anti-reflectance elements. As application examples, polymer microlenses were integrated directly on the top of UV dual functional devices and quantum dot long wavelength infrared photodetectors, respectively.

Biomedical optical spectroscopic techniques to characterize medicinal drug Fibril-SF powder

“…The computerized FT instrument may save the IR or Raman Spectrum of samples for different data processing's. Thus, it is interesting for many researchers in the fields of biochemistry, biomedicine, biophysics and biomaterials to use both vibrational spectroscopes' to investigate structural components of biosamples [6][7][8] . In many fields such as Biomedicine, Biochemistry, Biophysics and Bio Materials, the biomedical optical spectroscopy techniques such as FT-IR & FT-Raman are interesting.…”