Laser assembly including a crystalline laser disc with an annular glass coating

Claim 2

A CRYSTALLINE LASER DISC HAVING AN ANNULAR LEAD BORATE GLASS COATING CAPABLE OF ABSORBING ENERGY AT THE LASING WAVELENGTH TO THEREBY ABSORB PARASITIC OSCULLATIONS, THE GLASS COATING HAVING AN INDEX OF REFRACTION NOT LESS THAN THE INDEX OF REFRACTION OF THE CRYSTALLINE DISC, THE THERMAL EXPANSION AND CONTRACTION OF THE COATING BEING SUFFICIENTLY COMPATIBLE WITH THE DISC TO PREVENT THE DEVELOPMENT OF AN UNDESIRABLE STRESS LEVEL THEREIN; THE GLASS COATING INCLUDING BARIUM OXIDE AND AL2O3 AND AN EFFECTIVE AMOUNT OF COPPER OXIDE THAT ABSORBS ENERGY AT A WAVELENGTH OF ABOUT 1.06 MICRONS.

Claim 3

A disc as defined in claim 1 in which the glass composition comprises the following ingredients in approximate percentages by weight:

Claim 4

A disc as defined in claim 1 in which the glass composition has the following ingredients in their respective percent by weight:

Claim 5

A disc as defined in claim 2 in which the disc is ruby and the glass composition of the coating has the following ingredients in their respective approximate percent by weight:

Claim 6

A disc as defined in claim 4 in which the glass composition of the coating has the following ingredients in their respective percent by weight:

Claim 7

A disc as defined in claim 3 in which the disc is yttrium aluminum garnet and the glass composition has the following ingredients in their respective percent by weight:

Claim 8

A disc as defined in claim 6 in which the glass composition has the following ingredients in their respective percent by weight:

Claim 9

A LASER ASSEMBLY COMPRISING: MEANS FOR PROVIDING A SOURCE OF PUMPING LIGHT; MEANS FOR DEFINING A CAVITY HAVING A LASING MATERIAL INCLUDING A HOUSING; MEANS FOR HOLDING A CRYSTALLINE LASER DISC WITHIN THE HOUSING; A CRYSTALLINE LASER DISC LOCATED WITHIN THE HOUSING FOR CAUSING STIMULATED EMMISION; THE DISC HAVING AN ANNULAR COATING; THE COATING COMPRISING A LEAD BORATE GLASS CAPABLE OF ABSORBING ENERGY AT THE LASING WAVE LENGTH TO THEREBY ABSORB ANY PARASITIC OSCILLATIONS, THE GLASS COATING HAVING AN INDEX OF REFRACTION NOT LESS THAN THE INDEX OF REFRACTION OF THE CRYSTALLINE DISC, THE THERMAL EXPANSION AND CONTRACTION OF THE COATING BEING SUFFICIENTLY COMPATABLE WITH THE LASER DISC SO AS TO PREVENT THE DEVELOPMENT OF UNDESIRABLE STRESSES IN THE DISC, THE GLASS COATING INCLUDING AN EFFECTIVE ENERGY-ABSORBING AMOUNT OF COPPER OXIDE THAT ABSORBS ENERGY AT THE LASING WAVE LENGTH.

Claim 10

A LASER ASSEMBLY COMPRISING: MEANS FOR PROVIDING A SOURCE OF PUMPING LIGHT; MEANS FOR DEFINING A CAVITY HAVING A LASING MATERIAL INCLUDING A HOUSING; MEANS FOR HOLDING A CRYSTALLINE LASER DISC WITHIN THE HOUSING; A CRYSTALLINE LASER DISC LOCATED WITHIN THE HOUSING FOR CAUSING STIMULATED EMMISION; THE DISC HAVING AN ANNULAR COATING; THE COATING COMPRISING A LEAD BORATE GLASS CAPABLE OF ABSORBING ENERGY AT THE LASING WAVE LENGTH TO THEREBY ABSORB ANY PARASITIC OSCILLATIONS, THE GLASS COATING HAVING AN INDEX OF REFRACTION NOT LESS THAN THE INDEX OF REFRACTION OF THE CRYSTALLINE DISC, THE THERMAL EXPANSION AND CONTRACTION OF THE COATING BEING SUFFICIENTLY COMPATABLE WITH THE LASER DISC SO AS TO PREVENT THE DEVELOPMENT OF UNDESIRABLE STRESSES IN THE DISC, THE GLASS COATING INCLUDING AN EFFECTIVE ENERGY-ABSORBING AMOUNT OF COPPER OXIDE THAT ABSORBS ENERGY AT THE LASING WAVE LENGTH.

Claim 11

The new use of a glass coating for a crystalline laser disc the new use comprising the steps of: a. coating the crystalline disc with a lead borate glass containing an effective energy-absorbing amount of copper oxide that absorbs energy at the lasing wave length to provide an annular coating on the disc; b. pumping the disc to cause an energy inversion; and c. passing monochromatic light through the disc to cause stimulated emission and also absorb energy at the lasing wave length in the annular glass coating to thereby prevent parasitic oscillations.

Claim 12

The new use of a glass coating for a crystalline laser disc the new use comprising the steps of: a. coating the crystalline disc with a lead borate glass containing an effective energy-absorbing amount of copper oxide that absorbs energy at the lasing wave length to provide an annular coating on the disc; b. pumping the disc to cause an energy inversion; and c. passing monochromatic light through the disc to cause stimulated emission and also absorb energy at the lasing wave length in the annular glass coating to thereby prevent parasitic oscillations.