The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 11, 1988
Filed:
Oct. 17, 1985
Applicant:
Inventors:
Alain Barthelemy, Limoges, FR;
Bernard Colombeau, Limoges, FR;
Claude Froehly, Limoges, FR;
Michel Vampouille, Limoges, FR;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ;
U.S. Cl.
CPC ...
350403 ; 332-751 ; 350174 ;
Abstract
The optical phase modulator device comprises a source of short laser pulses, a material having self-induced variation in refraction index, and an interferometer device interposed between the source of short laser pulses and the material having self-induced variation of refractive index in order to form four fragmented waves for which the average value of the correlation product is zero. The device enables stable optical phase shifts of more than 2.pi. radians to be obtained in beams having a regular geometrical structure, and it is also applicable to high power laser amplification.