Using the optically pumped variable stripe length technique we demonstrate that, through calibration of measured spontaneous emission spectra, it is possible to determine the total radiative recombination rate for a gain material as a function of the intrinsic quasi-Fermi level separation. Specifically we compare the room temperature optical characteristics of a self-assembled InP/GaInP quantum...

Hyperpolarized noble gases are used in a variety of applications including medical diagnostic lung imaging, tests of fundamental symmetries, spin filters, atomic gyroscopes, and atomic magnetometers. Typically 3He is utilized because large 3He polarizations on the order of 80% can be achieved. This is accomplished by optically pumping an alkali vapour which polarizes a noble gas nucleus via spi...

Abstract Research on quantum sensors for the detection of magnetic fields (quantum magnetometers) is one fast-moving areas Quantum Technologies. Since there exist expectations about their use in geophysics, this work will provide a brief overview various developing technologies and individual state art implementing magnetometers. As example, developments superconducting interference devices, so...

We have studied the nonlinear Faraday effect with intense linear polarized light in an optically thick atomic rubidium vapor. We demonstrate that the polarization rotation rate rotation angle per unit magnetic field, in the limit of low field has a maximum value as the intensity and density are increased. We also show that the optimal sensitivity of an optical magnetometer based on this system ...

We report on an electro-optically Q-switched Tb:LiYF 4 green laser pumped by a frequency-doubled optically semiconductor blue laser. The characteristics were studied under wide range of repetition rates from 200 Hz to 50 kHz using KD 2 PO Q-switch. Up 198 µJ pulse energy was obtained with width 248 ns at rate Hz, corresponding peak power 797 W 544 nm.