We show theoretically that a chirped quasi-phase-matching nonlinear crystal structure can significantly enhance the axial resolution in quantum optical coherence tomography by increasing the spectral width of the generated entangled photon pairs. For pulsed pumps we show how the pump-pulse duration affects the maximum resolution attainable.
© 2004 Optical Society of America
Silvia Carrasco, Juan P. Torres, Lluis Torner, Alexander Sergienko, Bahaa E. A. Saleh, and Malvin C. Teich, "Enhancing the axial resolution of quantum optical coherence tomography by chirped quasi-phase matching," Opt. Lett. 29, 2429-2431 (2004)