Photonics Dictionary

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ruby laser

The optically pumped, solid-state laser that uses sapphire as the host lattice and chromium as the active ion. The emission takes place in the red portion of the spectrum.

crystal laser -> solid-state laser

A solid-state laser is a type of laser that uses a solid gain medium (as opposed to a liquid or gas) to produce coherent light. The term "solid-state" refers to the fact that the active medium, where...

laser crystal

A laser crystal, also known as an active medium or gain medium, is a solid-state material used in the construction of lasers. The primary function of the laser crystal is to amplify light by...

laser rod

In a solid-state laser, the material (Nd:YAG, Nd:glass, ruby) in which lasing action takes place.

negative crystal

A uniaxial, birefringent crystal such as calcite or ruby in which the velocity of the extraordinary ray surpasses that of the ordinary ray. This can also be defined as the index of refraction of the...

oblate crystal -> negative crystal

picosecond pulse

A pulse having extremely short duration, about 10-13 to 10-10 s, that is produced by mode locking of wide-bandwidth lasers, such as the organic dye and ruby lasers. Picosecond pulses are used in the...

sapphire -> sapphire

Sapphire can refer to either a gemstone or a specific type of crystalline material commonly used in various industrial applications. Gemstone: Natural sapphire: A natural sapphire is a precious...

sapphire

Sapphire can refer to either a gemstone or a specific type of crystalline material commonly used in various industrial applications. Gemstone: Natural sapphire: A natural sapphire is a precious...

solid-state laser

three-level laser

A laser having a material, such as ruby, that has an energy state structure of three levels: the ground state (1) wherein excitation applied to the material raises ions in the material into the...

Photonics Dictionary

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