New spectral lines

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.