Electro-optical parametric oscillators with novel loop pulling cancellation scheme

The novel concept of the electro-optical parametric oscillator (EOPO) as a frequency stabilization scheme is presented. Effects that are limiting the performance of the basic EOPO scheme and approaches to overcome the dominant imperfections are discussed. A certain frequency noise cross talk that takes place between the pump and the EOPO output is suppressed by locking the frequency of the pumplight to the frequency of the EOPO output as an active reference. Fluctuations of the loop delay time also lead to a pulling of the frequency of the EOPO output. Therefore a novel loop pulling cancellation scheme based on amplitude modulation spectroscopy is presented and demonstrated in this paper.