Rhombohedral fluoroberyllium borate crystals and hydrothermal growth thereof for use in laser and non-linear optical applications and devices

Single, acentric, rhombohedral, fluoroberyllium borate crystals of a size sufficient for use in a variety of laser and non-optical applications are formed by a hydrothermal method

Method for forming heterogeneous single garnet based crystals for passive Q-switched lasers and microlasers

Disclosed are heterogeneous crystals for use in a laser cavity and methods of forming the crystals. A crystal can be a monolithic crystal containing a garnet-based activator region and a garnet-based Q-switch. Disclosed methods include hydrothermal growth techniques for the growth of differing epitaxial layers on a host. A YAG host material can be doped in one region with a suitable activator ion for lasing and can be formed with another region that is doped with a saturable absorber to form the Q-switch. Regions can be formed with controlled thickness in conjunction. Following formation, a heterogeneous crystal can be cut, polished and coated with mirror films at each end for use in a laser cavity to provide short pulses of high power emissions using high frequency pulse modes

Heterogeneous single vanadate based crystals for Q-switched lasers and microlasers and method for forming same

Disclosed are heterogeneous crystals for use in a laser cavity and methods of forming the crystals. A crystal can be a monolithic crystal containing a vanadate-based activator region and a vanadate-based Q-switch. Disclosed methods include hydrothermal growth techniques for the growth of differing layers on a host. A YVO4 host material can be doped in one region with a suitable active lasing ion and can be formed with another region that is doped with a saturable absorber. Regions can be formed with controlled thickness. Following formation, a heterogeneous crystal can be cut, polished and coated with mirror films at each end for use in a laser cavity to provide short pulses of high power emissions using high frequency pulse modes

Hydrothermal Growth of Heterogeneous Single Crystals for Solid State Laser Applications

Disclosed are heterogeneous crystals for use in a laser cavity and methods of forming the crystals. A crystal can be a monolithic crystal containing regions that are based upon the same host material but differ from one another according to some material feature such that they can perform various functions related to lasing. Disclosed methods include hydrothermal growth techniques for the growth of differing epitaxial layers on a host. A host material can be doped in one region with a suitable active lasing ion and can be formed with another region that is undoped and can act as an endcap, a waveguide cladding layer, or a substrate to provide strength and/or contact to a heat sink. Regions can be formed with controlled thickness in conjunction. Following formation, a heterogeneous crystal can be cut, polished and coated with mirror films at each end for use in a laser cavity

Hydrothermal growth of lanthanide vanadate crystals for use in laser and birefringent applications and devices

The invention features an electrophoretic display element. The display element includes an electrophoretic display medium, an optical biasing element to modify an optical characteristic of the electrophoretic display element, and an addressing electrode to address the electrophoretic display medium. The optical biasing element may include, for example, a distinct layer of material, or may include particles or molecules embedded in a layer of the display element

Acentric lithium borate crystals, method for making, and applications thereof

Acentric, tetragonal lithium borate crystals are disclosed along with a hydrothermal method for forming such crystals. The crystals possess unique optical, non-linear optical, and other photonic properties and may be formed of sufficient size to be useful in a wide variety of photonic devices. In addition, the disclosed crystals are very hard and can be used in specialty grinding applications such as for grinding optical components for deep UV applications