Patent ID: 6389043
Filing Date: 2002-05-14
Classification: H01S

Abstract:
A method of intracavity frequency conversion in an optical cavity that defines an optical axis between a first and a second reflector, comprising the steps of:pumping a gain medium situated within the optical cavity to provide a fundamental laser emission propagating in a first direction along the optical axis and also propagating in a second, opposite direction along the optical axis; frequency converting said emission propagating in said first direction within the optical cavity in a nonlinear material to generate a first converted beam propagating in the first direction; reflecting said first converted beam from the second reflector; frequency converting said emission propagating in said second direction said nonlinear material to generate a second converted beam that co-propagates in the second direction together with said reflected first converted beam to provide a combined frequency-converted beam; and reflecting said combined frequency-converted beam at a predefined nonzero angle with respect to the optical axis to provide a reflected converted beam.