I report the observation of population inversion by optical adiabatic rapid passage. These observations, on an ${\mathrm{NH}}_{3}$ infrared transition with all the relevant parameters known, agree with theoretical expectations. The pressure dependence of ${T}_{1}$ , obtained by this technique, makes possible the first estimate of the collision-induced rotational lifetime of ${\mathrm{NH}}_{3}$ in an excited band, which is significantly longer than the rotational lifetime in the ground vibrational band.I report the observation of population inversion by optical adiabatic rapid passage. These observations, on an ${\mathrm{NH}}_{3}$ infrared transition with all the relevant parameters known, agree with theoretical expectations. The pressure dependence of ${T}_{1}$, obtained by this technique, makes possible the first estimate of the collision-induced rotational lifetime of ${\mathrm{NH}}_{3}$ in an excited band, which is significantly longer than the rotational lifetime in the ground vibrational band.

Physical Review LettersApr 15, 1974235 citations

Population inversion by near-resonant sequential optical pulses

Noriaki Tsukada

Optics CommunicationsMar 1, 19784 citations

Adiabatic inversion of population and nonlinear absorption of light by accelerated atoms

Fedor F. Baryshnikov, Valerii S. Lisitsa, S. A. Sukhin

Feb 1, 19810 citations

Adiabatic Passage Based on the Calcium Active Optical Clock

Xiaopeng Xie, Wei Zhuang, Jingbiao Chen

We propose a new application of the optical adiabatic passage effect for the excitation of a thermal atomic beam, which will be used in the calcium active optical clock to produce population inversion. A comparison between the optical adiabatic passage effect and the Rabi π pulse is investigated, 99% of the calcium atoms in the atomic beam that has a wide velocity distribution will be excited to the upper state for population inversion using the adiabatic passage, while 76% at most will be excited to the excited state using the π pulse with suitable parameters.We propose a new application of the optical adiabatic passage effect for the excitation of a thermal atomic beam, which will be used in the calcium active optical clock to produce population inversion. A comparison between the optical adiabatic passage effect and the Rabi π pulse is investigated, 99% of the calcium atoms in the atomic beam that has a wide velocity distribution will be excited to the upper state for population inversion using the adiabatic passage, while 76% at most will be excited to the excited state using the π pulse with suitable parameters.

Chinese Physics LettersJul 1, 201010 citations

Adiabatic inversion with light pulses

E. B. Treacy

Physics Letters AAug 1, 196873 citations

I report the observation of population inversion by optical adiabatic rapid passage. These observations, on an

{\mathrm{NH}}_{3}

infrared transition with all the relevant parameters known, agree with theoretical expectations. The pressure dependence of

{T}_{1}

, obtained by this technique, makes possible the first estimate of the collision-induced rotational lifetime of

{\mathrm{NH}}_{3}

in an excited band, which is significantly longer than the rotational lifetime in the ground vibrational band.