Coherent light generators – Particular pumping means – Pumping with optical or radiant energy
Patent
1994-10-13
1996-11-05
Scott, Jr., Leon
Coherent light generators
Particular pumping means
Pumping with optical or radiant energy
372 34, 372 39, 372 69, 372103, 372 23, 372 64, 372 9, H01S 3091
Patent
active
055725414
ABSTRACT:
A composite, glass or crystalline laser rod having a doped, light-absorbing core portion surrounded by a transparent cladding portion that is either undoped or doped with a nonabsorbing material is side-pumped with a plurality of laser diodes dispersed angularly around the laser rod. A reflective coating or sleeve substantially surrounds the laser rod, except for entrance slits for the pump light, to confine unabsorbed pump light in the crystalline laser rod by reflecting and re-reflecting the pump light in the rod to increase the likelihood of absorption by the core portion. The reflective coating is substantially reflective of all the pump light, but it can be transparent to laser radiation emission by the rod. An absorptive coating that absorbs radiation of the wavelength of the laser radiation emission of the rod can be positioned around the outside of the reflective coating to absorb lateral laser emission of the rod. A clamp assembly with a rod holding axial bore and radially extending slots t,hat provide clamping flexibility and channel pump light transversely into the laser rod.
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patent: 5040187 (1991-08-01), Karpinski
patent: 5140607 (1992-08-01), Paiva
"Composite Rod Optical Masers," Applied Optics vol. 1, No.1, Jan. 1962, G. E. Devlin, J. McKenna, A. D. May, and A. L. Schawlow.
Coherent Technologies, Inc.
Jr. Leon Scott
Young James R.
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