In this paper, a quantitative discussion has been given on the beat frequency shift of oppositely directed travelling waves (ODTW) due to the flow of active and non-active atoms in the gain tube.

In this paper, a, quantitative discussion has been given on the beat frequency shift of oppositely directed traveling waves (ODTW) due to the flow of active and non-active atoms in the gain medium.

From the model of the active atoms interacting with damped fields, the Pauli master equation and its steady-state solution for degenerate two-photon laser operation are obtained by using perturbation method, It can been shown that, under near threshold condition, Zubairy's results are the zero-order approximation of the results presented in this paper.

Condition of Glass Transition in Liquids and Lindemann's Criterion of Melting in the Excited Atom Model

Cross sections for dissociative excitation of spectral lines of the excited atom and the singly charged ion of cadmium were measured at an incident electron energy of 30 eV.

It is demonstrated that the best fit to experiment is shown by the results obtained using a basic chemical model with atomic partition function in the nearest neighbor approximation with classical determination of the size of excited atom.

It is demonstrated that the best fit to experiment is shown by the results obtained using a basic chemical model with atomic partition function in the nearest neighbor approximation with classical determination of the size of excited atom.

Photon vacuum renormalization and spontaneous decay of an excited atom near a carbon nanotube

The gas flow in the gain tube is one of the main error sources in ring laser gyros. In this paper, a quantitative discussion has been given on the beat frequency shift of oppositely directed travelling waves (ODTW) due to the flow of active and non-active atoms in the gain tube. It has been shown that the flow of active atoms causes a split of gain curves of the ODTW, and the differences between mode pulling and mode pushing, as well as the effects of radiation trapping, will introduce a beat frequency shift....

The gas flow in the gain tube is one of the main error sources in ring laser gyros. In this paper, a quantitative discussion has been given on the beat frequency shift of oppositely directed travelling waves (ODTW) due to the flow of active and non-active atoms in the gain tube. It has been shown that the flow of active atoms causes a split of gain curves of the ODTW, and the differences between mode pulling and mode pushing, as well as the effects of radiation trapping, will introduce a beat frequency shift. By employing the third-order theory, the theoretical formulae and some numerical results of Langmuir flow are presented. In particular, a statistical approach bas been utilized to handle with the beat frequency shift problem when a Gaussian beam passes the gain field and the flow velocity field, and calculation formulae have been derived for all possible cases.

The gas flow in the gain medium is one of the main error sources in ring laser gyros. In this paper, a, quantitative discussion has been given on the beat frequency shift of oppositely directed traveling waves (ODTW) due to the flow of active and non-active atoms in the gain medium.By employing the third-order theory, the theoretical formulae and some numerical results of Langmuir flow are presented. In particular, a statistical approach has been utilized to handle with the beat frequency shift problem when...

The gas flow in the gain medium is one of the main error sources in ring laser gyros. In this paper, a, quantitative discussion has been given on the beat frequency shift of oppositely directed traveling waves (ODTW) due to the flow of active and non-active atoms in the gain medium.By employing the third-order theory, the theoretical formulae and some numerical results of Langmuir flow are presented. In particular, a statistical approach has been utilized to handle with the beat frequency shift problem when a Gaussian beam passes the gain field and the flow velocity field, and calculation formulae have been derived for all possible cases.

From the model of the active atoms interacting with damped fields, the Pauli master equation and its steady-state solution for degenerate two-photon laser operation are obtained by using perturbation method, It can been shown that, under near threshold condition, Zubairy's results are the zero-order approximation of the results presented in this paper.