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Essentials for Designing LED Luminaires

LED light sources offer numerous potential advantages for illumination applications. However, without proper consideration of the many crucial factors affecting the long-term performance of LED luminaires in lighting applications, the design effort can be wasted. This webcast explores the essential considerations and requirements when designing LED-based luminaires, so that the end product can ...

Recent Advances In Pulsed High-Power Fiber-Laser Systems

Fiber-laser technology represents an extremely flexible platform for the development of pulsed laser sources capable of a diverse range of pulse parameters at unprecedented average power levels. To achieve the highest pulse energies, highest peak powers, and shortest pulse durations, control of nonlinear and dispersive effects within the fiber is essential. This requires both the development of...

Vibration Control: Principles and Criteria for Isolation of Vibration-Sensitive Objects

Requirements for vibration isolation of precision and vibration-sensitive objects are continuously increasing. Unfortunately, the textbook model conventionally used to formulate these requirements is an incorrect single degree of freedom model. The correct model should be based on two degrees of freedom. This model shows the critical importance of damping for vibration isolation of vibration se...

Optical Coating Performance in Systems

The performance calculations that we perform during the design of an optical coating normally involve ideal conditions. The light is precisely collimated and monochromatic and the layers have precise thicknesses and optical constants. Then a subsequent performance measurement of a manufactured coating will involve illumination with finite aperture and bandwidth. When the coating is finally used...

Precision Motion Control: from Micropositioning to Nanopositioning

During the past few years motion control products have evolved in two apparently opposite directions as they address two different sets of applications. On the one hand, miniaturization is important for systems targeted at the semiconductor, biomedical, and research markets; while on the other hand systems targeted at applications in the printed circuit, flat panel display, and photovoltaic/sol...

Specialty Fibers

Fiber optic systems for medical, dental, and veterinary applications rely on a variety of special fibers for laser power delivery to and imaging of the treatment site. Special materials can be used to engineer specific characteristics into these fibers and the use of proprietary manufacturing techniques allows them to be tailored for individual applications in endoscopes and other systems. This...

Kilowatt Fiber Lasers and Beyond

Born out of the telecom revolution, fiber lasers have been power-scaled from 0.1 to several kilowatts in only a few years. Despite these impressive results, high-power fiber laser development is still in its infancy. Limited investment rather than the fundamentals of the technology is the biggest hurdle according to Professor David Payne, Director of the Optoelectronics Research Centre at the U...