Absorption spectra of wide-gap semiconductors in their transparency region
| Autor: | Mansoor Sheik-Bahae, Babak Imangholi, Michael P. Hasselbeck |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Materials science
Absorption spectroscopy business.industry Wide-bandgap semiconductor Two-photon absorption Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Optics Laser cooling Attenuation coefficient Z-scan technique Electrical and Electronic Engineering Physical and Theoretical Chemistry business Luminescence Absorption (electromagnetic radiation) |
| Zdroj: | Optics Communications. 227:337-341 |
| ISSN: | 0030-4018 |
| DOI: | 10.1016/j.optcom.2003.09.044 |
| Popis: | The linear absorption spectra of GaP, TiO 2 , ZnSe, and ZnS are measured in their transparency range using a two-color, excite-probe Z -scan. ZnS has the lowest absorption coefficient (∼10 −5 cm −1 ) in the wavelength range 840–900 nm, making it an excellent material for use as a luminescence extracting lens in semiconductor laser cooling experiments. Direct observation of two-photon absorption in ZnSe using only low power, continuous laser beams is also reported. |
| Databáze: | OpenAIRE |
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