Patent ID: 8830587
Filing Date: 2014-09-09
Classification: G02B,H01S

Abstract:
1. An apparatus for providing a pump light of a first wavelength λ 1 to a laser that emits a second wavelength λ 2 , comprising: a first laser of the first wavelength λ a second laser of the first wavelength λ wherein the first and second axes define a first plane P and a filter apparatus that is disposed to form a composite light beam of the first wavelength λ (i) a first filter that is formed on a first surface of the filter apparatus that is disposed at an oblique angle to the first and second axes and that is transmissive to λ (ii) a second filter that is formed on a second surface of the filter apparatus that is parallel to the first surface, wherein the second filter reflects λ (iii) a third filter that is formed on the first surface of the filter apparatus, coplanar with the first filter, and wherein the third filter reflects λ wherein the filter apparatus re-aligns the first and second axes along a second plane P