Zobrazeno 1 - 10
of 107
pro vyhledávání: '"S. R. Hartmann"'
Autor:
A. I. Lvovsky, S. R. Hartmann
Publikováno v:
Physical Review A. 59:4052-4057
We calculate the far-field intensity pattern of superradiant emission from an optically thin ensemble of atomic oscillators excited by a spatially nonuniform laser pulse of large Rabi area. As the excitation intensity is increased, the superradiant f
Autor:
A. I. Lvovsky, S. R. Hartmann
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 31:3997-4016
A transient grating is induced at t = 0 in an optically thin caesium vapour sample using two simultaneous intense short laser pulses which are resonant with the fundamental - transition and characterized by the wavevectors and . These pulses are foll
Autor:
S. R. Hartmann, A. I. Lvovsky
Publikováno v:
Physical Review A. 56:4254-4263
Refined measurements and analysis of time-delayed second-harmonic generation on the 6D3/2-6S1/2 transition in Cs vapor are presented that resolve the disparity between the measured and calculated time delays reported in its initial observation. We ex
Autor:
S. R. Hartmann, Fred Moshary
Publikováno v:
Optics Communications. 131:327-332
The incoherent broad-band time delayed four-wave-mixing technique was used to study carrier relaxation dynamics at the absorption edge of CdSSE nanocrystallites doped in glass at room temperature. The absorption spectra is found to be homogeneously b
Publikováno v:
The Journal of Chemical Physics. 104:4380-4389
Time‐delayed‐four‐wave‐mixing (TDFWM) experiments performed on nile blue and cresyl violet at 5 K using incoherent laser radiation yield a response which depends dramatically on excitation conditions. Fast (femtosecond) and slow (picosecond)
Publikováno v:
Optics Communications. 120:295-298
We demonstrate an effective scheme for passively stabilizing the single shot spectrum of the amplified pulses from a synchronously pumped dye laser system. This scheme is easy to implement and inexpensive. Data from resonant and nonresonant coherent
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 24:3981-3987
The authors propose a method to detect and study the non-linear dynamic Lorentz shift in an atomic vapour by applying a controlled intense fixed frequency optical field detuned from resonance and then measuring the spectral reflectivity of a weak exc
Publikováno v:
Physical Review A. 42:5573-5579
Intense light incident on a dense-gas--dielectric interface, from the dielectric side, is reflected because of the combined effect of the discontinuities in the index of refraction at the interface and at the transition region in the gas where the de
Autor:
S R Hartmann, J T Manassah
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 23:1363-1372
The time-delayed four-wave mixing response of an inhomogeneously broadened optical multilevel system with a single ground state is calculated for a pair of correlated excitation fields interrogated by a relatively coherent probe field. The effects of
Publikováno v:
Technical Digest. Summaries of Papers Presented at the International Quantum Electronics Conference. Conference Edition. 1998 Technical Digest Series, Vol.7 (IEEE Cat. No.98CH36236).
By applying a sequence of three pulses two photon resonant with the 5S-5D transition in Rb vapor, we generate yoked superfluorescence (YSF) pulses via the 5D-6P-5S channel that generate a stimulated superfluorescence photon echo (SSPE) on the 6P-5S t