Laser bandwidth and Doppler broadening effects on the population dynamics of three-level atomic gadolinium
A S Choe; J Han; Y Rhee; J Lee; P S Han; M A Kuzmina; V A Mishin; A S Choe; Atomic Spectrosc. Lab., Korea Atomic Energy Res. Inst., Taejon, South Korea; J Han; Atomic Spectrosc. Lab., Korea Atomic Energy Res. Inst., Taejon, South Korea; Y Rhee; Atomic Spectrosc. Lab., Korea Atomic Energy Res. Inst., Taejon, South Korea; J Lee; Atomic Spectrosc. Lab., Korea Atomic Energy Res. Inst., Taejon, South Korea; P S Han; Atomic Spectrosc. Lab., Korea Atomic Energy Res. Inst., Taejon, South Korea; M A Kuzmina; Atomic Spectrosc. Lab., Korea Atomic Energy Res. Inst., Taejon, South Korea; V A Mishin; Atomic Spectrosc. Lab., Korea Atomic Energy Res. Inst., Taejon, South Korea
Журнал:
Journal of Physics B: Atomic, Molecular and Optical Physics
Дата:
1995-06-28
Аннотация:
The effects of laser bandwidth and Doppler broadening on the population dynamics of the ladder configuration which consists of three levels of Gd such as <sup>9</sup>D<sub>5</sub><sup>0</sup> (999.121 cm<sup>-1</sup>), 5d6s6p <sup>9</sup>F<sub>4</sub> (17973.611 cm<sup>-1</sup>) and 5d6s7s <sup>9</sup>D<sub>4</sub><sup>0</sup> (33534.095 cm<sup>-1</sup>) are studied numerically using the Bloch equation. In particular, for the examination of the bandwidth effect we choose a finite-bandwidth quasi-monochromatic laser and describe its field as a set of phase-independent modes. The remarkable fact is noted that the laser bandwidth of 1 GHz causes radiation-atom interactions to be very strongly incoherent, so the three-level populations are the same throughout almost all the interaction-time region.
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