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Stimulated Photon Echo Modulation in Ruby

Shunsuke Nakanishi, O. Tamura, 孝夫村本 +1 more

A stimulated photon echo modulation varying in T (separation between the second and third pulses) due to the superhyperfine interaction between a Cr ion and neighboring Al nuclei has been observed in ruby by using a Stark switching technique. The modulation was observed for a time much longer than T 2 , and much higher resolution was obtained than by two-pulse photon echo experiments. An apparent disagreement between theoretical and experimental modulation patterns was noticed in the region where T > T 2 .A stimulated photon echo modulation varying in T (separation between the second and third pulses) due to the superhyperfine interaction between a Cr ion and neighboring Al nuclei has been observed in ruby by using a Stark switching technique. The modulation was observed for a time much longer than T 2 , and much higher resolution was obtained than by two-pulse photon echo experiments. An apparent disagreement between theoretical and experimental modulation patterns was noticed in the region where T > T 2 .

Japanese Journal of Applied PhysicsJan 1, 198012 citations

Stark-induced optical transients in ruby

Arthur G. Szabo, Martin Kroll

Extension of the Brewer-Shoemaker technique of Stark-induced optical transients to a solid-ruby-is reported. Optical free-induction decay and photon echoes, as well as the first observation of an optical edge echo, have been obtained.

Optics LettersJan 1, 197838 citations

Optical Nutation Echoes in Ruby

孝夫村本, Shunsuke Nakanishi, O. Tamura +1 more

We observed the optical nutation echoes, i.e., the optical analog of rotary-spin echoes, in ruby. The experiment was carried out using a Stark switching technique. The inversion of the effective field in the rotating frame was achieved by applying a small short Stark pulse (phase-shifting pulse) whose amplitude ΔE and width Δt satisfy the condition that Δω·Δt is equal to an odd multiple of π where Δω is the frequency offset produced by ΔE. A train of nutation echoes was also observed by applying successive phase-shifting pulses. The observed nutation-echo-envelope decay time was 12 µs which is nearly equal to 2T 2 consistent with the theoretical prediction. Radiation-locking and radiation-locked echo experiments were also performed by using similar phase-shifting techniques.We observed the optical nutation echoes, i.e., the optical analog of rotary-spin echoes, in ruby. The experiment was carried out using a Stark switching technique. The inversion of the effective field in the rotating frame was achieved by applying a small short Stark pulse (phase-shifting pulse) whose amplitude ΔE and width Δt satisfy the condition that Δω·Δt is equal to an odd multiple of π where Δω is the frequency offset produced by ΔE. A train of nutation echoes was also observed by applying successive phase-shifting pulses. The observed nutation-echo-envelope decay time was 12 µs which is nearly equal to 2T 2 consistent with the theoretical prediction. Radiation-locking and radiation-locked echo experiments were also performed by using similar phase-shifting techniques.

Japanese Journal of Applied PhysicsApr 1, 198011 citations

Observation of Two-Photon Optical Free-Induction Decay in Atomic Sodium Vapor

P. F. Liao, John E. Bjorkholm, J. P. Gordon

We have used the Stark-switching technique to observe two-photon optical free-induction decay in the visible using sodium vapor. Transients were observed with use of both a resonant and a nonresonant intermediate state for the two-photon transition.

Physical Review LettersJul 4, 197740 citations

Radiation locked photon echoes and optical free induction in ruby

P. F. Liao, Sven R. Hartmann

Physics Letters AJul 1, 197335 citations

Two-photon optical transients by intensity switching

Maryna D'Souza, Arvind Kumar

A new method of observing two-photon optical transients is proposed, namely, by intensity switching of incident cw laser beams. This method, which is an alternative to the standard dc Stark or frequency-switching techniques, employs the second-order optical (ac) Stark effect to throw the two-photon active levels in or out of resonance by appropriately switching the intensities of the two laser beams. Theoretical treatment for the three basic transients optical nutation, free induction decay, and two-pulse echo in thin samples using intensity switching, is given for both the cases: co- and counter-propagating beams. The feasibility of the method for the $5{S}_{\frac{1}{2}}\ensuremath{-}3{S}_{\frac{1}{2}}$ transition in Na vapor is demonstrated. An important feature is the apearance of an intensity-dependent beat frequency in the optical FID signal.A new method of observing two-photon optical transients is proposed, namely, by intensity switching of incident cw laser beams. This method, which is an alternative to the standard dc Stark or frequency-switching techniques, employs the second-order optical (ac) Stark effect to throw the two-photon active levels in or out of resonance by appropriately switching the intensities of the two laser beams. Theoretical treatment for the three basic transients optical nutation, free induction decay, and two-pulse echo in thin samples using intensity switching, is given for both the cases: co- and counter-propagating beams. The feasibility of the method for the $5{S}_{\frac{1}{2}}\ensuremath{-}3{S}_{\frac{1}{2}}$ transition in Na vapor is demonstrated. An important feature is the apearance of an intensity-dependent beat frequency in the optical FID signal.

Physical Review ASep 1, 19804 citations

Observation of Various Photon Echoes and FID in Ruby by Stark Switching Technique

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Observation of Various Photon Echoes and FID in Ruby by Stark Switching Technique

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