frequency doubling
Quick Summary
Frequency doubling is a phenomenon in nonlinear optics where light of a specific frequency interacts with a material to produce light at twice that frequency. This occurs when the intensity of the incoming light is high enough to cause the material's atomic oscillators to respond in a way that is not directly proportional to the light's intensity.1
A common example is when high-intensity light of frequency f passes through a nonlinear crystal, and a portion of it is converted into light with a frequency of 2f. This effect was first observed in 1961. For instance, the infrared output of a neodymium laser can be transformed into green light by passing it through a crystal like barium strontium niobate. Nonlinear optics has various applications in fields such as communications, photonics, and information processing.12
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- spectroscopyLasers for RIS
For example, in frequency doubling, photons of frequency ω1 incident to a crystal will emerge from the crystal with frequencies ω1 and 2ω1, where the component 2ω1 can have a large fraction of the intensity of ω1. Nonlinear processes are efficient when laser beams are intense, a condition…
Read MoreFor example, in frequency doubling, photons of frequency ω1 incident to a crystal will emerge from the crystal with frequencies ω1 and 2ω1, where the component 2ω1 can have a large fraction of the intensity of ω1. Nonlinear processes are efficient when laser beams are intense, a condition…
Read More - opticsNonlinear optics
…important nonlinear effect is probably frequency doubling. Optical radiation of a given frequency is propagated through a crystalline material and interacts with that material to produce an output of a different frequency that is twice the input frequency. For example, the 10,600-angstrom infrared output of a neodymium laser can, under…
Read More…important nonlinear effect is probably frequency doubling. Optical radiation of a given frequency is propagated through a crystalline material and interacts with that material to produce an output of a different frequency that is twice the input frequency. For example, the 10,600-angstrom infrared output of a neodymium laser can, under…
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