| Autor: |
W. W. Bewley, C. L. Felix, I. Vurgaftman, E. H. Aifer, J. R. Meyer, L. Goldberg, D. H. Chow, E. Selvig |
| Rok vydání: |
1998 |
| Zdroj: |
Laser Applications to Chemical, Security and Environmental Analysis. |
| DOI: |
10.1364/lacea.1998.ltua.3 |
| Popis: |
Vertical-cavity surface-emitting lasers (VCSELs) are in many ways ideal for chemical sensing. A spectrally-narrow single-mode output beam with relatively low divergence may be obtained by confining the lateral dimensions to the order of a few wavelengths, whereas edge-emitting semiconductor lasers must either undergo extensive processing or employ an external cavity. However, until now the only published report of a short-cavity VCSEL emitting at a wavelength beyond 1.7 μm was a HgCdTe device which operated only to T = 30 K and required a threshold pump intensity of 45 kW/cm2 at 10 K.1 |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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