Stark level-crossing spectroscopy

Polik W F, Guyer D R and Moore C B 1990 Stark level-crossing spectroscopy of Sq formaldehyde eigenstates at the dissociation threshold J. Chem. Phys. 92 3453-70... 

NaK D l electric dipole moment measurement by Stark level crossing and e-f mixing spectroscopy., J. Chem. Phys. 106 (6), p. 2195 2204 (1997). 

We will conclude this section by illustrating how the tensor Stark polarizability constant can be measured using level-crossing spectroscopy. As illustrated in Fig.9,18, for the case of the potassium 5d 03/2 state the unknown Stark effect is measured in terms of the well-known Zeeman effect... 

Figure 1.50 illustrates the obtainable sensitivity by a AM = 0 Stark spectrum of the ammonia isotope NH2D composed of measurements with several laser lines [146]. An electric resonance signal is observed at every crossing point of the sloped energy levels with a fixed laser frequency. Since the absolute frequency of many laser lines was measured accurately within 20 0 kHz (Sect. 9.7), the absolute frequency of the Stark components at resonance with the laser line can be measured with the same accuracy. The total accuracy in the determination of the molecular parameters is therefore mainly limited by the accuracy of 10 for the electric field measurements. To date numerous molecules have been measured with laser Stark spectroscopy [146-149]. The number of molecules accessible to this technique can be vastly enlarged if tunable lasers in the relevant spectral regions... 

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