ND-YAG laser

Patent · Tue Mar 24 00:00:00 EST 1987

OSTI ID:6535604

Baer, T M; Keirstead, M S

This patent describes a high efficiency, diode pumped array, compact neodymium-YAG laser, comprising: a neodymium-YAG laser rod having a front end and a back end, a housing with means holding the neodymium-YAG rod in fixed position in the housing with its front end forward; a laser diode array for pumping the neodymium-YAG rod, having an output frequency sufficiently matched to the rod to pump the rod, secured in the housing behind and in optical alignment with the rod; output coupler means including a mirrored surface forming a front end of a laser cavity; a rear mirror means forming a back end of the laser cavity, with the neodymium-YAG rod within the cavity; a frequency doubler within the laser cavity, positioned to receive the output beam of the laser rod and to halve its wavelength, doubling its frequency; and polarization control means for adjusting and maintaining the polarization of the laser beam to a polarization which optimized frequency doubling of the laser beam by the frequency doubler.

• Assignee: Spectra-Physics, Inc., San Jose, CA
• Patent Number(s): US 4653056
• OSTI ID: 6535604
• Resource Relation: Patent File Date: Filed date 1 May 1985
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
NEODYMIUM LASERS
DESIGN
OPERATION
ALIGNMENT
ALUMINIUM OXIDES
EFFICIENCY
ELECTRICAL PUMPING
FERRITE GARNETS
FREQUENCY CONTROL
FREQUENCY CONVERTERS
LASER CAVITIES
LASER MIRRORS
OPTICS
POLARIZATION
RODS
SEMICONDUCTOR DIODES
WAVELENGTHS
YTTRIUM COMPOUNDS
ALUMINIUM COMPOUNDS
CHALCOGENIDES
CONTROL
LASERS
MINERALS
MIRRORS
OXIDES
OXYGEN COMPOUNDS
PUMPING
SEMICONDUCTOR DEVICES
SILICATE MINERALS
SOLID STATE LASERS
TRANSITION ELEMENT COMPOUNDS
420300* - Engineering- Lasers- (-1989)