Patent ID: 6097540
Filing Date: 2000-08-01
Classification: H01S

Abstract:
A frequency coversion combiner system for a multiple diode laser source comprising:a diode laser having more than one emitter, each emitter having a beam quality, M.sup.2 <2.5, at its emitting surface;wherein beam quality parameter, M.sup.2, satifies the relationship, M.sup.2 =.pi.W.theta./4.lambda., with W being a beam's minimum near-field diameter, .theta. being said beam's divergence angle in the far field for a specific emission wavelength .lambda.,beam transform optics;a quasi-phase matching crystal having a large nonlinear optical coversion coefficient;a beam combiner, whose optics multiplex said more than one emttier's beams into an output beam having a beam quality, M.sup.2.sub.n, substantially equal to or less than 2.5;wherein subscript, n, denotes how many emitters are present in said diode laser; andsaid elements being optically aligned and fitted in said system to achieve said beam quality.