Archives

Fundamentals of Photonics: Photovoltaics

JEFF HECHT, author of "Understanding Lasers" and long-time contributing editor to Laser Focus World presents a series of Webcasts based on his popular Back-to-Basics feature articles that cover photonics fundamentals. Designed to provide scientists, researchers, and engineers with an overview of lasers and other photonics technologies, these Webcasts will also offer additional insight into how ...

Market Trends and Emerging Applications in the LED Industry

The high-brightness LED market has been in a slow-growth phase since 2004 due to the dominant position of the mobile appliance market, which has become saturated. However, the overall market showed an uptick in growth in 2007, as other applications, especially illumination, continued to perform well, and emerging applications began to show promise for a resumption of higher growth in the future...

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...