Some examples of photorefractive oscillators
Journal Title: Elektronika - Year 2015, Vol 19, Issue 2
Abstract
The photorefractive effect presents a periodical change of the refractive index of an optical environment under the influence of a coherent light. An interesting phenomenon which occurs at this effect is optical phase conjugation (PC). Photorefractive oscillators, that is photorefractive mirrors present important decides in photorefractive optics and their function is based on photorefractive effect. In these oscillators, a phase-conjugated light beam occurs. The basic characteristics of photorefractive oscillators, such as reflectivity, the existance of the oscillation threshold and the threshold of the coupling strength are explained by the so-called grating-action method. This is analysed on a ring oscillator, semilinear mirror and linear mirror.
Authors and Affiliations
Zoran Ljuboje
Keywords
Related Articles
- EP ID EP362716
- DOI 10.7251/ELS1519105L
- Views 75
- Downloads 0
A Novel Purely Active Electronically Controllable Configuration for Simulating Resistance in Floating Form
This paper proposes a new purely active floating resistance simulation circuit employing two voltage differencing trans-conductance amplifiers (VDTAs). The proposed configuration enjoys following advantageous features; (...
Prototype of the Multichannel Acquisition System Developed for ICTM Pressure Transmitters
This paper presents a prototype of the multichannel acquisition unit AKV-100 developed for purposes of pressure and temperature measurements using proprietary ICTM pressure transmitters TPa-110 based on MEMS piezoresisti...
Hardware Implementation of FTC of Induction Machine on FPGA
In this paper, a new design method of Direct Torque Control using Space Vector Modulation (DTC-SVM) of an Induction Machine (IM), which is based on Fault Tolerant Control (FTC) is proposed. Due to its complexity, the FTC...
Challenges and Opportunities in Applying Semantics to Improve Access Control in the Field of Internet of Things
The increased number of IoT devices results in continuously generated massive amounts of raw data. Parts of this data are private and highly sensitive as they reflect owner’s behavior, obligations, habits, and preference...
Analytical modelling of the transient response of thermopile-based MEMS sensors
This work presents an analytical model dedicated to study of the transient response of multipurpose MEMS devices based on thermopile sensors. In general, thermopile sensors response depends on ambient temperature, therma...