Abstract
We describe experiments on the excitation of amplified spontaneous emission on the D-lines of sodium (D2 = 588.9 nm; D1 = 589.6 nm) with longitudinal optical pumping with a large detuning from the D2 line toward shorter wavelengths. The radiation spectra are measured, showing gain on both lines, at a Na concentration of (1-5) × 1014 cm-3, buffer gas (helium) pressure of 600 Torr at the working temperature, and pumping power density of more than 1.5 MW/cm2. The time characteristics show that the output radiation varies versus the concentration of sodium atoms in the active medium. The dependences of radiation absorption at the D-lines of sodium on the concentration of Na atoms and buffer gas pressure are given.
Original language | English |
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Pages (from-to) | 101-105 |
Number of pages | 5 |
Journal | Atmospheric and Oceanic Optics |
Volume | 31 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2018 |
Keywords
- Active optical system
- Alkaline metals
- Amplified spontaneous emission
- Optical pumping
- Sodium
ASJC Scopus subject areas
- Oceanography
- Atomic and Molecular Physics, and Optics
- Earth-Surface Processes
- Atmospheric Science