| 摘要 |
A laser device, which includes an oscillator unit having a rectangular-solid-shaped housing containing a laser oscillator for generating and outputting a laser light; an amplifier unit having a rectangular-solid-shaped housing containing an amplifier that receives and amplifies the laser light to output; and, a group of optical elements including optical elements provided on a laser light path, wherein the laser device includes one or more amplifier units, and the oscillator and the amplifier units are arranged such that surfaces having a wide area other than a surface having a smallest area of a housing of the oscillator unit and a housing of at least one amplifier unit are next to and face each other, or such that surfaces having a wide area other than a surface having a smallest area of a housing of at least two amplifier units are next to and face each other.
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