| Autor: |
Chaoray Hsieh, Omid Momtahan, Majid Badieirostami, Ali Adibi, Jón Atli Benediktsson, Bahram Javidi, Karl S. Gudmundsson |
| Rok vydání: |
2007 |
| Předmět: |
|
| Zdroj: |
AIP Conference Proceedings. |
| ISSN: |
0094-243X |
| DOI: |
10.1063/1.2812308 |
| Popis: |
Compact and efficient spectrometers are of great interest for biological and environmental sensing. In this talk, we describe a class of spectrometers that work based on diffractive properties of spherical beam and cylindrical beam volume holograms. The hologram in these spectrometers acts as a spectral diversity filter (SDF), which maps different input wavelengths into different locations in the output plane. The main properties of these holographic SDFs and the new techniques for removing the ambiguity between incident wavelength (or the input channel) and the incident angle (or the input spatial mode) are discussed, and the performance of the overall holographic spectrometers will be compared with that of the conventional spectrometers. Finally, it is also shown that by combining such volume holograms with a Fabry‐Perot interferometer, a true two‐dimensional spatial‐spectral mapping can be formed which allows for the formation of wideband spectrometers with ultra‐high resolution in a very compact slit‐... |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
