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Optics Letters

Reply to “Comment on ‘Time reversal of ultrafast waveforms by wave mixing spectrally decomposed waves’”

Dan M. Marom, Dmitriy Panasenko, Rostislav I. Rokitski, Pang-Chen Sun, Yeshaiahu Fainman

Published Aug 15, 2000• 2 citations
Publisher

Abstract

In response to a comment on our Letter [Opt. Lett. 25, 132 (2000)], we reiterate the distinction between the spectral inversion and the spectral phase conjugation processing techniques. The former achieves time reversal of the complex amplitude waveform, whereas the latter performs time reversal of the real electric field.
DOI
10.1364/ol.25.001209

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Summary form only given. In this tallk I will try to supplement what I learned in the field. Here are the topics to be touched on. The order is not historical, but serves a tutorial purpose. 1. Time reversibility (TR) of optical wave propagation. 2. Mathematical description of TR in terms of complex amplitudes and complex conjugate amplitudes. 3. Static holography by real and conjugate images. 4.Static holography: illumination by counterpropagating reference waves at the recording and reconstruction stages. 5. Dynamic holography/four-wave mixing for phase conjugation (R. Hellwarth, A. Yariv, Yariv-Pepper instability. 6. Delayed and hidden holograms, photon echoes, electro-acoustic echoes. 7. Two-photon coherence, fast nonlinearities and three-wave mixing via X(2) nonlinearity. 8. Yet unrealized: Bragg (periodic domain). Time-domain phase conjugation: reversal of chirp and compensation of the dispersion spread in fibers. 10. Why a laser may (and may not) oscillate at a single transverse mode: discrimination of gain/loss. 11. Phase conjugation via stimulated Brillouin scattering (V.V. Ragulsky; V.V. Shkunov). 12. Brillouin-enhanced four-wave mixing for phase conjugation, ten to the tenth power amplification of the image (G.A. Pasmanik). 13. Photorefractive crystals: nonlinear response at low intensity at a cost of long build-up time. 14. Double phase conjugation 15. Feinberg's cat and cat conjugator.
We reply on the comment [Opt. Lett.41, 5821 (2016)10.1364/OL.41.005821OPLEDP0146-9592] regarding our Letter [Opt. Lett.40, 3536 (2015)OPLEDP0146-959210.1364/OL.40.003536], where a dissipative driven bosonic mode strongly coupled to a two-level system is studied. We show that the authors of the comment erroneously claim that the Monte Carlo simulation is insufficient. More important is the basic statement of the comment about the vanishing width of the spectral line. This means that the plasmon spectral line vanishes at a large external field. The authors of the comment do not distinguish the averages of the observables from the quasi-averages that are quite different in multistable systems where ergodicity is challenged.