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there are lasers that emit a broad spectrum of light or emit different wavelengths of light simultaneously. Some lasers are not single spatial mode and have


Mode-locking is a technique in optics by which a laser can be made to produce pulses of light of extremely short duration, on the order of picoseconds

Laser diode

An Introduction to Laser Diodes Overview of available single mode diode lasers Video showing laser bar assembly process Sam's Laser FAQ by Samuel M. Goldwasser

Helium–neon laser

A helium–neon laser or HeNe laser, is a type of gas laser whose gain medium consists of a mixture of 90% helium and 10% neon at a total pressure of about

Yasuharu Suematsu

optical communication technology by invention of the Dynamic Single Mode Semiconductor Lasers for actuation and following development of large capacity and