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It is difficult to know which one is most basic, fundamental and a possible generalization for the other. The two effects, although related, also bear several strong differences.
 
It is difficult to know which one is most basic, fundamental and a possible generalization for the other. The two effects, although related, also bear several strong differences.
  
Electromagnetic Induced Transparency (EIT) involves interferences of two external coherent driving field of a 3LS, whereby the two field cancel by destructive interference the excitation of the excited state. Terminology goes that one beam is the pump, the other is the probe (going through) but this is a bit misleading as to the nature of the effect. This involves instead of "coherent population trapping" [which was itself discovered by Alzetta{{etal}}{{cite|alzetta76a}} and formalized into a general principle by Kocharovskaya{{cige|kocharovskaya86a}}].
+
Electromagnetic Induced Transparency (EIT) involves interferences of two external coherent driving field of a 3LS, whereby the two field cancel by destructive interference the excitation of the excited state. Terminology goes that one beam is the pump, the other is the probe (going through) but this is a bit misleading as to the nature of the effect. This involves instead of "coherent population trapping" [which was itself discovered by Alzetta{{etal}}{{cite|alzetta76a}} and formalized into a general principle by Kocharovskaya{{cite|kocharovskaya86a}}.
  
Self-Induced Transparency (SIT) does not require two fields but takes care of the reshaping of the dielectric medium all by itself, furthermore typically composed of two-level resonantly interacting quantum systems, through strong-coupling of the transition by the strong pulse that subsequently travels as a soliton. This was discovered by McCall and Hahn{{cite|mccall67a}} and fist observed by Boller{{etal}} (co-authored by [[A. Imamoglu]] who subsequently worked a lot laser without inversion, which interestingly led him to [[polariton]]s lasers).
+
Self-Induced Transparency (SIT) does not require two fields but takes care of the reshaping of the dielectric medium all by itself, furthermore typically composed of two-level resonantly interacting quantum systems, through strong-coupling of the transition by the strong pulse that subsequently travels as a soliton. This was discovered by McCall and Hahn{{cite|mccall67a}} and first observed by Boller{{etal}} (co-authored by [[A. Imamoglu]] who subsequently worked a lot laser without inversion, which interestingly led him to [[polariton]]s lasers).
  
 
== References ==
 
== References ==

Latest revision as of 17:11, 8 January 2024

Electromagnetic Induced Transparency (EIT)

There are two closely related coherent optical phenomena for IT (Induced Transparency), which turn an opaque (absorbing) medium into a transparent (allowing propagating) one:

  1. EIT (Electromagnetic IT)
  2. SIT (self-IT).

It is difficult to know which one is most basic, fundamental and a possible generalization for the other. The two effects, although related, also bear several strong differences.

Electromagnetic Induced Transparency (EIT) involves interferences of two external coherent driving field of a 3LS, whereby the two field cancel by destructive interference the excitation of the excited state. Terminology goes that one beam is the pump, the other is the probe (going through) but this is a bit misleading as to the nature of the effect. This involves instead of "coherent population trapping" [which was itself discovered by Alzetta et al.[1] and formalized into a general principle by Kocharovskaya[2].

Self-Induced Transparency (SIT) does not require two fields but takes care of the reshaping of the dielectric medium all by itself, furthermore typically composed of two-level resonantly interacting quantum systems, through strong-coupling of the transition by the strong pulse that subsequently travels as a soliton. This was discovered by McCall and Hahn[3] and first observed by Boller et al. (co-authored by A. Imamoglu who subsequently worked a lot laser without inversion, which interestingly led him to polaritons lasers).

References

  1. An experimental method for the observation of r.f. transitions and laser beat resonances in oriented Na vapour. G. Alzetta, A. Gozzini, L. Moi and G. Orriols in Nuov. Cim. B 36:5 (1976).
  2. Template:Kocharovskaya86a
  3. Self-Induced Transparency by Pulsed Coherent Light. S. L. McCall and E. L. Hahn in Phys. Rev. Lett. 18:908 (1967).

and also:

  1. Electromagnetically Induced Transparency. S. E. Harris in Physics Today 50:36 (1997).
  2. Slow, Ultraslow, Stored and Frozen Light. Y. Rostovtsev, O. Kocharovskaya, G. R. Welch and M. O. Scully in Opt. Photonics News 13:44 (2002).