High-Resolution Stark Spectroscopy in the ν_4 Band of NH_3 Using a Thin-Film Diode Laser
- 1 June 1974
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 13 (6) , 1431-1434
- https://doi.org/10.1364/ao.13.001431
Abstract
Thin-film PbTe diode lasers are used for Doppler-limited Stark spectroscopy on the vibration-rotation ν4 band of 1545–1595-cm−1 region. The lasers operate cw below 20 K and are frequency tuned by varying the diode current. The ν4 excited state dipole moment of NH3 is found to be about 1% less than the ground state value.Keywords
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