Traitement en cours

Veuillez attendre...

Paramétrages

Paramétrages

Aller à Demande

1. AU2000071711 - Solid state UV laser

Office Australie
Numéro de la demande 71711/00
Date de la demande 20.11.2000
Numéro de publication 2000071711
Date de publication 08.01.2004
Type de publication A
CIB
G02F 2/02
GPHYSIQUE
02OPTIQUE
FDISPOSITIFS OU SYSTÈMES DONT LE FONCTIONNEMENT OPTIQUE EST MODIFIÉ PAR CHANGEMENT DES PROPRIÉTÉS OPTIQUES DU MILIEU CONSTITUANT CES DISPOSITIFS OU SYSTÈMES ET DESTINÉS À LA COMMANDE DE L'INTENSITÉ, DE LA COULEUR, DE LA PHASE, DE LA POLARISATION OU DE LA DIRECTION DE LA LUMIÈRE, p.ex. COMMUTATION, OUVERTURE DE PORTE, MODULATION OU DÉMODULATION; TECHNIQUES NÉCESSAIRES AU FONCTIONNEMENT DE CES DISPOSITIFS OU SYSTÈMES; CHANGEMENT DE FRÉQUENCE; OPTIQUE NON LINÉAIRE; ÉLÉMENTS OPTIQUES LOGIQUES; CONVERTISSEURS OPTIQUES ANALOGIQUES/NUMÉRIQUES
2Démodulation de la lumière; Transfert de la modulation de la lumière modulée; Changement de fréquence de la lumière
02Changement de fréquence de la lumière, p.ex. par compteurs quantiques
B23K 26/36
BTECHNIQUES INDUSTRIELLES; TRANSPORTS
23MACHINES-OUTILS; TRAVAIL DES MÉTAUX NON PRÉVU AILLEURS
KBRASAGE OU DÉBRASAGE; SOUDAGE; REVÊTEMENT OU PLACAGE PAR BRASAGE OU SOUDAGE; DÉCOUPAGE PAR CHAUFFAGE LOCALISÉ, p.ex. DÉCOUPAGE AU CHALUMEAU; TRAVAIL PAR RAYON LASER
26Travail par rayon laser, p.ex. soudage, découpage ou perçage 
36Enlèvement de matière
Déposants Lions Eye Institute of Western Australia Incorporated, The
Mandataires FPA Patent Attorneys Pty Ltd
Données relatives à la priorité PO7968 16.07.1997 AU
Titre
(EN) Solid state UV laser
Abrégé
(EN)
Apparatus for generating a laser beam of wavelength suitable for ablating material, includes a source of an initial pulsed laser beam of wavelength unsuitable for the ablation, and frequency conversion means to derive from the initial laser beam by harmonic generation a laser beam of a wavelength suitable for ablating material. In one aspect, the initial laser beam is pulsed at a pulse rate between 5 and 30Hz. In another aspect the frequency conversion means includes a non-linear optical material and means is provided to maintain the material at a temperature of at least 400C. e THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS: 1. A method for ablating material including: directing a laser beam through a frequency doubling compound; then directing said beam through plurality of frequency converting compounds; then directing said beam through a beam separating system; and directing said beam or a portion of said an beam area onto of said material to ablate said material, wherein said frequency converting compounds include least at one Caesium Lithium Borate (CsLiBOo0 or CLBO) crystal. 2. A method as claimed in claim 1, including directing said beam. or portion of said beam to a laser delivery system and then onto said area of said material by means of said laser delivery system. 3. A method as claimed in claim 2, wherein said laser delivery system includes a large beam delivery system, a scanning system or a fibre optic delivery system. 4. A method as claimed in any one of the preceding claims, including performing said method by means of at least one CLBO crystal, is in a sealed dry, inert atmosphere. A method as claimed in any one of the preceding claims, wherein said at least one CLBO crystal is maintained at a temperature of between 40°C and 200 0C. FIGURE 1