Abstract: A method of fitting a golf putter to an individual golf stroke of a person which comprises the steps of: (a) providing a golf putter to a person comprising a shaft with a proximal end and a distal end, an attachment means for pivotably attaching a putter head to the distal end of the shaft, an elongate flat blade having opposed ends and a top side and a bottom side and pivotably attached on the top side to the attachment means allowing for selection of a desired angle of the blade relative to the shaft, one or more weights removably connected to the elongate flat blade, and an adjustable runner having a height and attached to the bottom side of the elongate flat blade; (b) determining the golf stroke of the person; (c) adjusting a runner height to the golf stroke of the person; (d) weighting the putter with the one or more weights to set a center of mass of the head to a point behind a contact area of the blade with a golf ball, particular to the golf stroke of the person; (e) pivoting the shaft with respe

Abstract: A laser apparatus and method is disclosed comprising a first lasant material which is located in an optical cavity and which produces laser radiation of a first wavelength, and a second lasant material which is pumped by radiation from the first lasant material, which absorbs laser radiation at the first wavelength in an amount generally comparable to the Optimum Output Coupling, which functions as the output coupler for the optical cavity and which lases at a second wavelength. The first lasant material and the second lasant material are preferably selected to have minimal losses such that there is a net gain in the cavity.