On the whole spectrometers are bulky instruments with limited portability. But, Ali Adibi of the Georgia Institute of Technology hopes to change all that. He and his colleagues have developed a technology to help reduce the number of parts needed by a spectrometer. Conventional spectrometers have a narrow slit, a lens, a grating, a second lens and a detector. The GaTech team has now combined these different components into a volume hologram formed from an inexpensive chunk of polymer and a detector to create a compact, efficient and inexpensive spectrometer that could be used for multiple spectroscopy and sensing applications.
New spectral lines