Experimental study of photon-echo size in optically thick media
نویسندگان
چکیده
We have studied the effect of generative-pulse amplitude, spatial profile, and temporal character as well as medium optical thickness on the power of photon and stimulated echoes. Working in atomic Yb vapor, photon echoes are observed that, absent material relaxation, are more powerful than the first generative pulse, thereby exceeding typically expected photon-echo powers by approximately two orders of magnitude. Factors crucial to the generation of powerful echoes identified through Maxwell-Bloch simulation are experimentally confirmed. @S1050-2947~99!51308-5#
منابع مشابه
THE THEORY OF PHOTOTHERMAL LENSING SPECTROSCOPY
A general theoretical description of dual-beam photothermallensing spectroscopy is given. The results are valid for most general conditions, that is, for flowing as well as stationary media, for optically thick as well as optically thin media, and also for any transverse modes of incident pump beams
متن کاملاثر تغییر تابع توزیع انرژی فوتونها بر شرایط احتراق سوخت هم مولار دوتریوم- تریتیوم
At the beginning of thermonuclear ignition in fusion plasma, the bremsstrahlung radiation is dominant phenomenon, the photons distribution function is Planckian and plasma is considered as optically thick one. But at a certain energy, the bremsstrahlung radiation and Compton scattering losses rates become equal and plasma makes a transition from optically thick to optically thin and photons dis...
متن کاملNumerical modeling of optical coherent transient processes with complex configurations—I. Angled beam geometry
We present a theoretical model for optical coherent transient (OCT) processes based on Maxwell–Bloch equations for angled beam geometry. This geometry is critical in various OCT applications where the desired coherence outputs need to be spatially separated from the rest of the field. The model takes into account both the local interactions between inhomogeneously broadened two-level atoms and ...
متن کاملAtom phase-locked coherence conversion using optical locking for ultralong photon storage beyond the spin T2 constraint
Using on-demand coherence conversion via optical locking, a dynamic coherent control of the collective atom phase has been demonstrated for longer photon storage beyond the critical constraint of spin phase decay time, where the storage time can be extended up to hours in a rare-earth-doped solid. Coherent transient phenomena such as photon echoes have been investigated for frozen phase decay v...
متن کاملElectromagnetically induced transparency line shapes for large probe fields and optically thick media
We calculate the line shape and linewidths for electromagnetically induced transparency EIT in optically thick, Doppler broadened media buffer gasses are also considered . In generalizing the definition of the EIT linewidth to optically thick media, we find two different linewidth definitions apply depending on whether the experiment is pulsed or continuous wave cw . Using the cw definition for...
متن کامل