From Understanding Lasers


The internal workings of semiconductor diode lasers are more complex than those of gas or solid-state lasers because they depend on the unique properties of semiconductors. This chapter starts by explaining the basics of semiconductor physics, then explains how semiconductor diodes can produce light, and how that light emission can be used to create a laser. Then it describes the diverse types of semiconductor diode lasers that are now in wide use in applications from playing CDs to powering high-power solid-state and fiber lasers.

Products & Services
Diode Lasers
Diode lasers use light-emitting diodes to produce stimulated emissions in the form of coherent light output. They are also known as laser diodes.
Fiber Lasers
Fiber lasers use optical fibers doped with low levels of rare-earth halides as the lasing medium to amplify light.
Laser Mounts
Laser mounts are devices that keep a laser in position on an optical table.
Fiber Optic Amplifiers
Fiber optic amplifiers re-amplify an attenuated signal without converting the signal into electrical form.
Laser Engraving and Laser Marking Machines
Laser engraving and laser marking machines use a high-powered laser to mark or scribe materials with text, images, patterns, and graduations.

Topics of Interest

9.1 BASICS OF SEMICONDUCTOR DIODE LASERS Like the other lasers described so far, a semiconductor diode laser generates a beam when spontaneous emission triggers a cascade of stimulated emission from a...

9.14 WHAT HAVE WE LEARNED? Semiconductor lasers are often called diode lasers or laser diodes. Diodes are two-terminal electronic devices that conduct current in one direction. Electrons in the...

9.3.2 Semiconductor Diode Laser Concepts It was a surprisingly small step from the first efficient LEDs to the first semiconductor lasers. Both were demonstrated in 1962 in the same material, gallium...

Chapter List Chapter 1: Gas State Lasers Chapter 2: Liquid State Lasers Chapter 3: Solid State Lasers Chapter 4: Semiconductor Lasers Chapter 5: Diode-Pumped Solid State Lasers Chapter 6:...

9.5.3 Multistripe Laser Arrays Laser power from a single laser stripe is inherently limited, even from a broad-area laser. To obtain higher powers, many parallel laser stripes can be fabricated on the...