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A comment on What are terahertz waves useful for?.

Re:What are terahertz waves useful for? by hamandcheese on Saturday April 02, 2022 @04:32PM (#30891427)
> Light-producing technologies like lasers, which are right at home in infrared, don’t work with terahertz waves either.

What about red, green, blue lasers?

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Re:What are terahertz waves useful for? by jasonwatkinspdx on Saturday April 02, 2022 @04:59PM (#30891628)
Those are yet higher wavelengths. Terahertz is 10e12 hz, visible light starts around 4.5e14 hz.
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