Accession Number:

ADA348615

Title:

Synchronously Pumped Optical Parametric Oscillator with Intracavity Difference Frequency Mixing

Descriptive Note:

Doctoral thesis

Corporate Author:

NEW MEXICO UNIV ALBUQUERQUE

Personal Author(s):

Report Date:

1998-06-29

Pagination or Media Count:

175.0

Abstract:

In this work we experimentally investigate a singly resonant optical parametric oscillator OPO with an intracavity crystal that mixes the signal and idler waves, enhancing the power conversion efficiency of the idler radiation. Optical parametric oscillators provide a method for producing coherent tunable radiation from a coherent fixed-frequency pump source. The pump frequency Wp 15 converted to the signal and idler frequencies Ws and Wi, respectively, in the OPO interaction, Wp Ws Wi, Ws Wi. Since the signal and idler frequencies sum to the incident pump frequency, they are always lower than the pump frequency. Extra-cavity difference-frequency mixing DFM of the signal and idler from an OPO was demonstrated in some early experiments and recently a number of investigators have examined mixing the signal and idler waves generated from a synchronously pumped OPO to produce long-wavelength difference-frequency radiation. Here the difference-frequency Wd is produced in the DFM interaction, Wd Ws - Wi. The DFM process not only produces long-wavelength radiation at the difference frequency, but for each difference-frequency photon produced, another idler photon is produced. Thus, this technique also increases the idler-frequency conversion efficiency. Production of the long-wavelength difference-frequency photons may not be possible in a single-step OPO process, due to transmission bands and phase-matching limitations of available crystals and available pump wavelengths.

Subject Categories:

  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE