Optical parametric oscilaltor with reflectivity-variable cavity
Title:
Optical parametric oscilaltor with reflectivity-variable cavity
Application Number:
01130791
Application Date:
2001/08/24
Announcement Date:
2002/02/06
Pub. Date:
Publication Number:
1334625
Announcement Number:
1140024
Grant Date:
Granted Pub. Date:
2004-2-25
ApplicationType:
Invention
State/Country:
11[China|beijing]
IPC:
H01S 3/08, H01S 3/105
Applicant(s):
Qinghua Univ
Inventor(s):
Gong Mali, Yan Ping, Shen Lei
Key Words:
Optical parametric oscilaltor, reflectivity-variable cavity
Abstract:
An optical parametric oscillator with reflectivity varying cavity consists of input reflector, non-linear crystal and output reflector, the non-linear crystal is on the place between the two reflectors. The reflectivity varying film series composed of at least three films are applied on the surface of a reflector chosen one of them from output or input reflector. The coated surface faces to the crystal. The thickness of at least one film is curvilinear, the films among film series are made of inorganic optical filming materials. Since the values of reflectivity of input or output reflector to outpt light are varied as a curve along the radial, the angle of divergence of beam is diminished effectively, hence the quality of the output laser beam is improved.
Claim:
Priority:
PCT:
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