- Laser - Wikipedia
A laser differs from other sources of light in that it emits light that is coherent Spatial coherence allows a laser to be focused to a tight spot, enabling uses such as optical communication, [6] laser cutting, and lithography
- 激光（受激辐射光放大）_百度百科
1957年：Townes的博士生Gordon Gould创造了“laser”这个单词，从理论上指出可以用光激发原子，产生一束相干光束，之后人们为其申请了专利，相关法律纠纷维持了近30年。
- Laser | Definition, Acronym, Principle, Applications, Types | Britannica
Laser, a device that stimulates atoms or molecules to emit light at particular wavelengths and amplifies that light, typically producing a very narrow beam of radiation The emission generally covers an extremely limited range of visible, infrared, or ultraviolet wavelengths
- 激光技术基础知识 - 知乎
激光英文名 LASER，其全称是Light Amplification by Stimulated Emission of Radiation。 字面意思就是“光受激辐射放大”。 其为人工光源，具有与自然光不同的特性，可直线传播到很远，并且可聚集在较小范围等…
- How do lasers work? | Who invented the laser? - Explain that Stuff
An easy-to-understand explanation of how lasers work, with a simple diagram showing what's inside a laser
- NIFs Guide to How Lasers Work
A laser is created when electrons in the atoms in optical materials like glass, crystal, or gas absorb the energy from an electrical current or a light That extra energy “excites” the electrons enough to move from a lower-energy orbit to a higher-energy orbit around the atom’s nucleus
- 激光器的工作原理、激光技术的基本原理 - Trotec Laser
所有激光器都包含以下三个组件： 泵浦源 受激介质 谐振腔 泵浦源将外源能量供给激光器。 受激介质位于激光器内部，取决于不同的激光器结构设计，激光介质可能是气体混合物 (CO 2 激光)、晶体棒 (YAG 固体激光) 或 玻璃纤维 (光纤激光)。激光介质在获得外部泵浦源的能量供给时，受激产生能量
- Lasers | Stanford Emerging Technology Review
A laser is a light source with three important characteristics Laser light is monochromatic, meaning the light is highly concentrated around a central wavelength, with very little emitted at other wavelengths
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