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Common current ultrashort pulse laser technologies include Ti-sapphire lasers and dye lasers. High output peak power usually requires chirped pulse amplification of a seed pulse from a modelocked laser. Dealing with high optical powers also needs the nonlinear optical phenomena to be taken in account. [citation needed]
Hungarian physician Endre Mester (1903–1984) was a pioneer of laser medicine, especially the use of low level laser therapy (LLLT). In 1967, only a few years after the first working laser was invented, he started his experiments with the effects of lasers on skin cancer.
We put a lot of products to the test at AOL. Here are our favorites on sale for Black Friday, including Keen sandals, Allbirds sneakers, and noise cancelling headphones.
Shoppers spent $11.3 million online every minute between 10 a.m. and 2 p.m., according to the sales tracking firm. Supporting the idea that many bargain hunters opted to shop online: ...
Adopted by Gen Z and Gen Alpha, it gained new prominence in 2024, according to Oxford, as a term used to capture concerns about the impact of consuming excessive amounts of "low-quality online ...
Sonic the Hedgehog 3 [b] is a 2024 action-adventure comedy film based on the video game series published by Sega. It was directed by Jeff Fowler and written by Pat Casey , Josh Miller , and John Whittington , based on a story by Casey and Miller.
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