Optical arrangement for non-linear frequency conversion has doubly refracting beam displacer(s) for combining or separating fundamental waves and/or coupling out waves produced

摘要

The optical arrangement contains at least one non-linear medium (2). At least one doubly refracting beam displacer (3) is used for combining or separating the fundamental waves and/or for coupling out the waves produced by the non-linear medium. At least one element is used for wavelength-dependent variation of polarization.