Resources Contact Us Home
Laser with gain medium configured to provide an integrated optical pump cavity

Image Number 2 for United States Patent #6834067.

An optically-pumped laser having a gain medium configured to provide a low loss, three-dimensional integrated optical pump cavity that substantially confines optical pump radiation within the lasing volume, which is particularly useful for efficiently pumping solid state gain media that has low pump dopant concentration. The integrated pump cavity includes a plurality of boundaries contiguous with the gain medium. An optical pump source such as a laser diode array supplies optical pump radiation that is input into the gain medium through one or more pump cavity windows with a propagation direction transverse to a laser axis defined through the gain medium. In some embodiments, an optical surface is situated opposite the window to approximately recollimate the input pump radiation. The optical pump cavity may be designed to concentrate the optical pump radiation and approximately uniformly pump the entire volume of the lasing medium. In one such embodiment, the pump cavity includes opposing converging surfaces that concentrate the optical pump radiation as it projects along the laser axis. Embodiments are disclosed in which a solid state gain medium has coatings that operate to suppress amplified spontaneous emission ("ASE"). Some embodiments also include heat sinks that directly contact the transverse boundaries and control the temperature distribution within the gain medium in a predetermined manner.

  Recently Added Patents
Cooling structure and cooling method for control rod drive mechanism and nuclear reactor
Measurement of an analyte on the skin using a hue angle
Mounting structure, electro-optical apparatus, and touch panel
Non-volatile memory and method having efficient on-chip block-copying with controlled error rate
Communication system
Cryptographic key split combiner
System and method to assess serviceability of device
  Randomly Featured Patents
Cool zone and control for pressure fryer
Therapeutic saddle
Targets, including Yap1, for antifungal drug discovery and therapy
Composition for forming an intumescent material
Ultraviolet irradiation system
Writing support
Conditional branch unit for microprogrammed data processor
Pet waste collector
Method of providing lower gloss protective covering for pre-press color proof