Laser diode pumped solid state laser

Patent · Tue Apr 07 04:00:00 EDT 1987

OSTI ID:6535686

Baer, T M; Keirstead, M S

This patent describes a high-efficiency, laser diode pumped array, frequency doubled, compact solid state laser, comprising: a rare earth doped birefringent solid laser rod selected from the group consisting of Nd:YLF, Nd:YALO having a front end and a back end, the rod producing a polarized output beam; a housing with means holding the laser rod in fixed position in the housing with its front end forward; a laser array having a predetermined wavelength pumping the laser rod, having a output frequency sufficiently matched to the laser rod to pump the laser rod, secured in the housing behind and in optical alignment with the rod; laser cavity means defining a laser cavity mounted in the housing with the laser rod positioned within the cavity, the laser cavity means further including within the cavity an output coupler means; a frequency doubler, positioned to receive a suitably polarized output beam from the laser rod and to halve its wavelength and double its frequency; a polarization means for polarizing the output beam of the laser rod and substantially maintaining a polarization which optimizes frequency doubling at the frequency doubler and means for matching a focused image of the laser diode with a lasing volume of the laser cavity.

• Assignee: Spectra-Physics, Inc., San Jose, CA
• Patent Number(s): US 4656635
• OSTI ID: 6535686
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
ALIGNMENT
ALKALI METALS
ALUMINIUM
BEAMS
CONTROL
DESIGN
DOPED MATERIALS
EFFICIENCY
ELECTRICAL PUMPING
ELEMENTS
FLUORINE
FREQUENCY CONTROL
FREQUENCY CONVERTERS
HALOGENS
LASER CAVITIES
LASERS
LITHIUM
MATERIALS
METALS
NEODYMIUM LASERS
NONMETALS
OPERATION
POLARIZATION
POLARIZED BEAMS
POSITIONING
PUMPING
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES
SOLID STATE LASERS
TRANSITION ELEMENTS
WAVELENGTHS
YTTRIUM