A new method of laser radiation generation without population inversion in the red wing of the $$D_{1}$$ -line of alkali metal atoms under resonant absorption of broadband radiation of pump laser diodes at the $$D_{1}$$ transition is studied theoretically. The appearance of laser generation is caused by the fact that the probability of stimulated emission in the red wing of the spectral line exceeds the probability of absorption if homogeneous broadening due to interaction between active particles and the buffer gas significantly exceeds the natural broadening (under high pressures of the buffer gas). Analytical formulas representing the operation of a transversely diode-pumped alkali metal vapor laser are obtained. It is found that cesium atoms are the most promising object for observation of laser generation without population inversion in the red wing of the $$D_{1}$$ -line of alkali metal atoms. In a sufficiently long active medium (the length of the medium is 50 times its width), the efficiency of pumping radiation conversion into laser radiation can reach 57% at a buffer gas pressure of 5 atm, a pump diode radiation intensity of 5 kW/cm $${}^{2}$$ , and a half-width of its spectrum of 1 cm $${}^{-1}$$ . The laser radiation frequency can be tuned by several tens of cm $${}^{-1}$$ .

Optoelectronics Instrumentation and Data ProcessingDec 1, 20230 citations

Physics Letters A

Impact theory of resonance broadening in spectral lines of the alkali metals

Derek N. Stacey, J. Cooper

Published Sep 1, 1969• 17 citations

Publisher

DOI: 10.1016/0375-9601(69)90035-8

Related papers

Theory of Resonance Broadening of Spectral Lines by Atom-Atom Impacts

A. W. Ali, Hans R. Griem

Physical ReviewApr 8, 1966114 citations

Theoretical Studies of Pressure Broadened Alkali-Metal Atom Resonance Lines

J. F. Babb, K. Kirby, H. K. Chung

Nov 1, 20020 citations

Some regularities of Stark widths of alkali-metal and singly ionized earth alkali-metal resonant spectral lines.

I. S. Lakićević, Jagoš Purić, M. S. Dimitrijević

POBeoJan 1, 19790 citations

Excitation of resonance levels of alkali metal atoms by electron impact

I.P. Zapesochnyi, E.N. Postoi, I. S. Aleksakhin

May 1, 19753 citations

Impact broadening of Rydberg atomic levels in inelastic collisions with alkali-metal atoms

Владимир Сергеевич Лебедев, V. S. Marchenko

The theory of impact broadening of the isolated spectral lines of the Rydberg atomic series perturbed by neutral particles is developed within the framework of the impulse approximation. The analysis of the broadening process is based on the consideration of the inelastic nl to n' transitions between highly excited states of the Rydberg atom. The role of the potential and resonance scattering of the quasifree electron by a perturbing particle in the impact broadening of the Rydberg nl levels is investigated. It is shown that the general expressions for the broadening cross sections presented in this paper contain the results of asymptotic Alekseev and Sobel'man theory (1965) as special cases. Both elastic and inelastic scattering contributions of the perturber by the parent core of Rydberg atom to the broadening cross sections are also considered within the framework of the 'shake' model. The results obtained are used for a quantitative explanation of experimental data on the broadening of Rydberg atomic levels perturbed by alkali-metal atoms. The energies and widths of the 3 P resonances on the quasidiscrete levels of the negative K - and Rb - ions are determined.The theory of impact broadening of the isolated spectral lines of the Rydberg atomic series perturbed by neutral particles is developed within the framework of the impulse approximation. The analysis of the broadening process is based on the consideration of the inelastic nl to n' transitions between highly excited states of the Rydberg atom. The role of the potential and resonance scattering of the quasifree electron by a perturbing particle in the impact broadening of the Rydberg nl levels is investigated. It is shown that the general expressions for the broadening cross sections presented in this paper contain the results of asymptotic Alekseev and Sobel'man theory (1965) as special cases. Both elastic and inelastic scattering contributions of the perturber by the parent core of Rydberg atom to the broadening cross sections are also considered within the framework of the 'shake' model. The results obtained are used for a quantitative explanation of experimental data on the broadening of Rydberg atomic levels perturbed by alkali-metal atoms. The energies and widths of the 3 P resonances on the quasidiscrete levels of the negative K - and Rb - ions are determined.

Journal of Physics B Atomic and Molecular PhysicsNov 28, 198724 citations

Laser Generation without Population Inversion in the Red Wing of the ${D}_{1}$ -Line of Alkali Metal Atoms under Resonant Diode PumpingLaser Generation without Population Inversion in the Red Wing of the $${D}_{1}$$-Line of Alkali Metal Atoms under Resonant Diode Pumping

А. И. Пархоменко, Anatolii M. Shalagin

A new method of laser radiation generation without population inversion in the red wing of the $D_{1}$ -line of alkali metal atoms under resonant absorption of broadband radiation of pump laser diodes at the $D_{1}$ transition is studied theoretically. The appearance of laser generation is caused by the fact that the probability of stimulated emission in the red wing of the spectral line exceeds the probability of absorption if homogeneous broadening due to interaction between active particles and the buffer gas significantly exceeds the natural broadening (under high pressures of the buffer gas). Analytical formulas representing the operation of a transversely diode-pumped alkali metal vapor laser are obtained. It is found that cesium atoms are the most promising object for observation of laser generation without population inversion in the red wing of the $D_{1}$ -line of alkali metal atoms. In a sufficiently long active medium (the length of the medium is 50 times its width), the efficiency of pumping radiation conversion into laser radiation can reach 57% at a buffer gas pressure of 5 atm, a pump diode radiation intensity of 5 kW/cm ${}^{2}$ , and a half-width of its spectrum of 1 cm ${}^{-1}$ . The laser radiation frequency can be tuned by several tens of cm ${}^{-1}$ .A new method of laser radiation generation without population inversion in the red wing of the $$D_{1}$$ -line of alkali metal atoms under resonant absorption of broadband radiation of pump laser diodes at the $$D_{1}$$ transition is studied theoretically. The appearance of laser generation is caused by the fact that the probability of stimulated emission in the red wing of the spectral line exceeds the probability of absorption if homogeneous broadening due to interaction between active particles and the buffer gas significantly exceeds the natural broadening (under high pressures of the buffer gas). Analytical formulas representing the operation of a transversely diode-pumped alkali metal vapor laser are obtained. It is found that cesium atoms are the most promising object for observation of laser generation without population inversion in the red wing of the $$D_{1}$$ -line of alkali metal atoms. In a sufficiently long active medium (the length of the medium is 50 times its width), the efficiency of pumping radiation conversion into laser radiation can reach 57% at a buffer gas pressure of 5 atm, a pump diode radiation intensity of 5 kW/cm $${}^{2}$$ , and a half-width of its spectrum of 1 cm $${}^{-1}$$ . The laser radiation frequency can be tuned by several tens of cm $${}^{-1}$$ .

Optoelectronics Instrumentation and Data ProcessingDec 1, 20230 citations

Laser Generation without Population Inversion in the Red Wing of the

{D}_{1}

-Line of Alkali Metal Atoms under Resonant Diode Pumping

A new method of laser radiation generation without population inversion in the red wing of the

D_{1}

-line of alkali metal atoms under resonant absorption of broadband radiation of pump laser diodes at the

D_{1}

transition is studied theoretically. The appearance of laser generation is caused by the fact that the probability of stimulated emission in the red wing of the spectral line exceeds the probability of absorption if homogeneous broadening due to interaction between active particles and the buffer gas significantly exceeds the natural broadening (under high pressures of the buffer gas). Analytical formulas representing the operation of a transversely diode-pumped alkali metal vapor laser are obtained. It is found that cesium atoms are the most promising object for observation of laser generation without population inversion in the red wing of the

D_{1}

-line of alkali metal atoms. In a sufficiently long active medium (the length of the medium is 50 times its width), the efficiency of pumping radiation conversion into laser radiation can reach 57% at a buffer gas pressure of 5 atm, a pump diode radiation intensity of 5 kW/cm

{}^{2}

, and a half-width of its spectrum of 1 cm

{}^{-1}

. The laser radiation frequency can be tuned by several tens of cm

{}^{-1}