Abstract
Conical light emission is observed when an intense quasi-resonant laser beam propagates in an atomic vapor. A model of Cherenkov radiation by laser-induced moving polarization was previously proposed to account for the origin and angular/spectral dependencies of the conical emission. The authors provide results on conical emission in Na supporting the Cherenkov-type radiation model. The forward light spectrum for a 15-ns laser pulse blue-detuned with respect to the D2 line at [Na]= 4.8 × 1015 cm-3 is shown. For certain laser detunings the conical emission has a small component on the red side of the D1 line. This observation is interpreted as strong evidence that the conical emission can be explained by the Cherenkov model.
Original language | English |
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Pages | 156-157 |
Number of pages | 2 |
State | Published - 1 Dec 1989 |
Externally published | Yes |
Event | Quantum Electronics and Laser Science Conference - Baltimore, MD, USA Duration: 24 Apr 1989 → 28 Apr 1989 |
Conference
Conference | Quantum Electronics and Laser Science Conference |
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City | Baltimore, MD, USA |
Period | 24/04/89 → 28/04/89 |
ASJC Scopus subject areas
- General Engineering