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A laser differs from other sources of light in that it emits light which is coherent. Spatial coherence allows a laser to be focused to a tight spot, enabling applications such as laser cutting and lithography. Spatial coherence also allows a laser beam to stay narrow over great distances (collimation), enabling applications such as laser pointers and lidar. Lasers can also have high temporal coherence, which allows them to emit light with a very narrow spectrum, i.e., they can emit a single color of light.

The laser materials is anticipated to grow in the forecast period owing to numerous driving factors such as rising laser treatments, the popularity of 3D printing, additive manufacturing, and laser-based materials processing. Application of medical lasers in several new applications along with laser-based drones and weapons in military application further fuel the laser materials market growth. However, fluctuating raw material prices restrict this market. On the other hand, the laser materials market is likely to showcase opportunities for untapped market during the forecast period.

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A laser that produces light by itself is technically an optical oscillator rather than an optical amplifier as suggested by the acronym. It has been humorously noted that the acronym LOSER, for "light oscillation by stimulated emission of radiation".With the widespread use of the original acronym as a common noun, optical amplifiers have come to be referred to as "laser amplifiers", notwithstanding the apparent redundancy in that designation.

A phosphor is a substance that emits light upon exposure of an electron beam or ultraviolet radiation. Phosphors are useful materials in the manufacture of LEDs. The chemistry and composition of phosphor largely determine the light quality, stability and efficiency of an LED. The LED technology is widely being used in illumination applications in automotive and households. LED bulbs consume lesser energy while producing a light having intensity higher than that of incandescent bulbs. Also, LED lights last longer than CFLs and even surpass them in terms of energy efficiency.

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Early LEDs were often used as indicator lamps, replacing small incandescent bulbs, and in seven-segment displays. Recent developments have produced high-output white light LEDs suitable for room and outdoor area lighting. LEDs have led to new displays and sensors, while their high switching rates are useful in advanced communications technology.

Appearing as practical electronic components in 1962, the earliest LEDs emitted low-intensity infrared (IR) light. Infrared LEDs are used in remote-control circuits, such as those used with a wide variety of consumer electronics. The first visible-light LEDs were of low intensity and limited to red. Modern LEDs are available across the visible, ultraviolet (UV), and infrared wavelengths, with high light output.

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Top Key Companies:

• Bridgelux

• Broadcom

• Citizen Electronics

• Cree

• Dialight

• GE Lighting

• Lumileds Holding B.V.

• Nichia

• OSRAM GmbH

• Seoul Semiconductor