Dyestuff laser
First Claim
1. Dyestuff laser consisting of a reservoir, with a laser dyestuff solution contained therein, and a pump light source connected thereto, which is capable of exciting the dyestuff solution to produce an emission, characterised in that the dyestuff solution contains a dyestuff which, in the form of the free acid corresponds to the general formula ##STR8## wherein R and R1 independently of one another represent ##STR9## R2 denotes an optionally substituted alkyl radical with 1-4 C atoms, R3 and R4 independently of one another represent hydrogen or optionally substituted C1 -C4 alkyl or conjointly with the nitrogen can form a 5-membered or 6-membered heterocyclic ring andm and n denote 1 or 2, andwhereinthe aromatic radicals contained in the formula can be further substituted, in a solvent which does not interfere with the emission, at a concentration, which emits laser beams, of, preferably, 10-2 to 10-5 mols/liter.
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Abstract
Laser light in the wavelength range of 420-480 nm is obtained with a dyestuff laser containing a dyestuff of the general formula ##STR1## wherein R and R1 independently of one another represent ##STR2## R2 denotes an optionally substituted alkyl radical with 1-4 C atoms, R3 and R4 independently of one another represent hydrogen or optionally substituted C1 -C4 -alkyl or conjointly with the nitrogen can form a 5-membered or 6-membered heterocyclic ring and
m and n denote 1 or 2, and
wherein
the aromatic radicals contained in the formula can be further substituted, in a solvent which does not interfere with the emission, at a concentration, which emits laser beams, of, preferably, 10-2 to 10-5 mols/liter.
32 Citations
4 Claims
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1. Dyestuff laser consisting of a reservoir, with a laser dyestuff solution contained therein, and a pump light source connected thereto, which is capable of exciting the dyestuff solution to produce an emission, characterised in that the dyestuff solution contains a dyestuff which, in the form of the free acid corresponds to the general formula ##STR8## wherein R and R1 independently of one another represent ##STR9## R2 denotes an optionally substituted alkyl radical with 1-4 C atoms, R3 and R4 independently of one another represent hydrogen or optionally substituted C1 -C4 alkyl or conjointly with the nitrogen can form a 5-membered or 6-membered heterocyclic ring and
m and n denote 1 or 2, and wherein the aromatic radicals contained in the formula can be further substituted, in a solvent which does not interfere with the emission, at a concentration, which emits laser beams, of, preferably, 10-2 to 10-5 mols/liter.
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2. Dyestuff laser consisting of a reservoir, with a laser dyestuff solution contained therein, and a pump light source connected thereto, which is capable of exciting the dyestuff solution to produce an emission, characterised in that the dyestuff solution contains a dyestuff which, in the form of the free acid corresponds to the general formula ##STR10## wherein R3 '"'"' and R4 '"'"' represent hydrogen, methyl, ethyl, hydroxyethyl or hydroxypropyl, or conjointly with the nitrogen represent the morpholine ring and
n denotes 1 or 2, in a solvent which does not interfere with the emission, at a concentration, which emits laser beams, of, preferably, 10-2 to 10-4 mols/liter.
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3. A process for producing an emission which comprises pumping light into a reservoir containing a laser dyestuff solution, the dyestuff of said solution being one which, in the form of the free acid corresponds to the general formula ##STR11## wherein R and R1 independently of one another represent ##STR12## R2 denotes an optionally substituted alkyl radical with 1-4 C atoms, R3 and R4 independently of one another represent hydrogen or optionally substituted C1 -C4 alkyl or conjointly with the nitrogen can form a 5-membered or 6-membered heterocyclic ring and m and n denote 1 or 2, and
wherein the aromatic radicals contained in the formula can be further substituted, wherein there is produced a coherent laser emission in the wave length range of 420-480 nm.
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4. A process for producing an emission which comprises pumping light into a reservoir containing a laser dyestuff solution, the dyestuff of said solution being one which, in the form of the free acid corresponds to the general formula ##STR13## wherein R3 '"'"' and R4 '"'"' represent hydrogen, methyl, ethyl, hydroxyethyl or hydroxypropyl, or conjointly with the nitrogen represent the morpholine ring and
n denotes 1 or 2, wherein there is produced a coherent laser emission in the wave length range of 420-480 nm.
Specification
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- Resources
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Current AssigneeBayer AG
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Original AssigneeBayer AG
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InventorsRaue, Roderich, Telle, Helmut, Brinkmann, Uwe
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Primary Examiner(s)Larkins, William D.
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Application NumberUS05/866,521Time in Patent Office1,246 DaysField of Search331/94.5 L, 252/301.17, 542/461US Class Current372/53CPC Class CodesH01S 3/213 including an organic dye
