Effects of the Optical "Nutation" Type in Multiple Photon Echo

Aleksey I. Alekseev, Ashat M. Basharov

A.I. Alekseyev, Ashat M. Basharov

A.I. Alekseyev, Ashat M. Basharov

Arto V Nurmikko, S. E. Schwarz

Stephen Colby Rand

Abstract Chapter 4 treats the three most important coherent optical transient phenomena using primarily the Bloch vector model. One section is devoted to each effect: nutation, free induction decay, and the photon echo. Through this, the idea that steady-state response to light develops slowly, on a timescale set by inertia in the atom–field interaction, is introduced. Nutation is considered both with and without damping. In the last section, three possible approaches to describing the photon echo are briefly compared to gain perspective on the advantages and disadvantages of algebraic echo analysis, rotation matrix multiplication, or density matrix methodology. By the end of this chapter the reader is prepared for the remaining chapters in which the density matrix approach is used exclusively to calculate the effects of light on a wide variety of systems.

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.