Fast-responding nonlinear phase shifter using a signal-wave gain medium

Physical Review A - Atomic, Molecular, and Optical Physics

Volumn 77, Issue 4, 2008, Pages

  Jiang, K J ^a,b   Deng, L ^a   Hagley, E W ^a   Payne, M G ^c  

^a NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY   (United States)

^b Wuhan National Laboratory for Optoelectronics   (China)

^c BOWLING GREEN STATE UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

GATE DIELECTRICS; INFORMATION SCIENCE; SIGNAL ANALYSIS; WAVE PROPAGATION;

FULL DENSITY MATRIX; NONLINEAR PHASE SHIFTING; SUPERLUMINAL PROPAGATION; WAVE SLOWDOWN;

PHASE SHIFTERS;

EID: 42449097667     PISSN: 10502947     EISSN: 10941622     Source Type: Journal    
DOI: 10.1103/PhysRevA.77.045804     Document Type: Article

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13. We have neglected corrections due to a very weak spontaneous Raman emission near the frequency of Es.
14. The dominant contribution to δ3p is | δ4 | | δ2p |.
15. In EIT-based schemes | δ2p τ | >1 leads to severe penalties.
16. Without this condition it is in general incorrect to make a steady-state approximation, especially if γ31 τ<1. This conclusion applies equally to all weakly-driven EIT-based schemes. See M. Payne, L. Deng, and K. Jiang, Phys. Rev. A PLRAAN 1050-2947 10.1103/PhysRevA.74.043810 74, 043810 (2006).
17. Typically, the lead time is about 10% of c. Thus it is quite accurate to estimate the device transient time using free-space speed of light.
18. There is a gain-induced static [i.e., ΩP dependent, see Fig. 1] phase. This static phase is independent of the nonlinear phase shift laser field Rabi frequency Ω43 and can be effectively eliminated technically.