EoP202. Spatial resolution of a phase-conjugate ring-resonator

Autor:	T. Tschudi, T. Kobialka, G. Balzer
Rok vydání:	1992
Předmět:	Materials science business.industry Phase (waves) Spectral density Photorefractive effect Condensed Matter Physics Transfer function Signal Electronic Optical and Magnetic Materials Resonator Interferometry Optics business Image resolution
Zdroj:	Ferroelectrics. 134:17-22
ISSN:	1563-5112 0015-0193
DOI:	10.1080/00150199208015558
Popis:	We describe our study of the spatial resolution of a phase-conjugating ring-resonator (PCR) consisting of a Sagnac interferometer and a phase-conjugating mirror (PCM) based on four-wave mixing in photorefractive BaTiO3. The use of optical image processing systems depends on the amount of information channels and the nonlinear coupling between the channels. We examined the contrast function of a set of incoming signals which depends on the gain of the PCR and the feedback ratio of the whole system. We obtained about 105 independent channels within our system. Additionally, we tried to investigate the transfer function of the system by comparing the power spectrum of the incoming signal and the output signal. By changing the geometrical setup of the system it should be possible to observe a higher resolution. On the other hand it is possible to control the coupling strength by varying the linear feedback part of the PCR.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::564205147e87fe5dab4323ec3a58a0a1 https://doi.org/10.1080/00150199208015558 Zobrazit plný text záznamu