Coherent phenomena in photonic crystalsCoherent phenomena in photonic crystals Peer-Reviewed Journal Publication Δημοσίευση σε Περιοδικό με Κριτές 2015-10-222001enWe study the spontaneous emission, absorption, and dispersion properties of a Λ-type atom where one transition interacts near resonantly with a double-band photonic crystal. Assuming an isotropic dispersion relation near the band edges, we show that two distinct coherent phenomena can occur. First the spontaneous emission spectrum of the adjacent free-space transition obtains “dark lines” (zeros in the spectrum). Second, the atom can become transparent to a probe laser field coupling to the adjacent free-space transition.http://creativecommons.org/licenses/by/4.0/Physical Review A641 Aggelakis Dimitrios Αγγελακης Δημητριος Paspalakis, Emmanuel Knight Peter L. American Physical Society Quantum optics Physics of lasers Optics, Nonlinear nonlinear optics optics nonlinear