Patent · US Expired

Process for producing laser light

US3975291A · kind A · utility

17Cited by

3References

3Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Uwe Claussen · Leverkusen, DE
Gunter Oppermann · Dietzenbach, DE

Key dates

Filing date	Mar 1, 1974
Grant date	Aug 17, 1976
Priority date	—
Expiry date	Mar 1, 1994

Classification

Technology area (CPC H)Electricity
CPC primaryH01S3/213
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Laser light of different wavelength can be produced by exciting sparingly water soluble fluorescent compounds of which the .alpha..alpha. m value is less than 0,300 and of which the molecular symmetry is either of symmetry group C.sub.s or of a higher symmetry group than this, the fluorophor having to form a rigid system if the compound belongs to symmetry group C.sub.s, the compounds being present in concentrations of between 10.sup..sup.-1 and 10.sup..sup.-5 mol/l in organic solvents.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.