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LATENT REFERENCES / TAG2

Femtosecond Lasers

Archive curator and editor: Keigo Yoshida

This reference note belongs to Tag2 in Latent References, an archive curated by Keigo Yoshida. Its archive region is Physics · Oscillation. The note preserves its source text and links so that readers can trace the material behind the 3D map.

Collection
Tag2
Archive region
Physics · Oscillation

Archived reference note

English translation of the archived note. JP shows the original text. Source links and literal code are retained; the translation does not update or independently verify the source claims.

A femtosecond laser is a pulsed laser with an ultrashort pulse width of femto (1×10-15) seconds, called an ultrashort-pulse laser. Light travels extremely fast, about 300,000km in 1 second (7 and a half circuits of Earth), but even light can travel only about 0.3 μm in 1 femtosecond.

Source updated 2023-10-02 · Snapshot 2026-10-08

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The text explains femtosecond pulse lasers and the distance light travels in that duration.

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