Patent ID: 6587496
Filing Date: 2003-07-01
Classification: H01S

Abstract:
A crystal arrangement for providing single-mode pumping of an Er3+ and co-doped Er3+, Yb3+ 1.5-&mgr;m amplifying structure comprising:a. an insulating crystal having Nd3+ ions dispersed therein; said Nd3+ ions having a primary absorption band defined by a 4I9/2â†’4F5/2 transition; b. means for defining within said crystal a single-mode laser cavity volume for re-radiating energy into any of the 4F3/2â†’49/2, 4F3/2â†’4I11/2, and 4F3/2â†’4I13/2 bands; c. a multimode laser diode for directing a multimode beam to said single mode laser cavity volume of said crystal; and d. means for coupling said re-radiating energy into said amplifying structure.