Convert Femtoseconds to Attoseconds
Convert Femtoseconds (fs) to Attoseconds (as) instantly and accurately.
Conversion Formula
as = fs × 1000
About Femtoseconds
A femtosecond (fs) = 10⁻¹⁵ s - the timescale of molecular vibrations and chemical reactions. Bond stretching: 10-200 fs; bending: 50-500 fs. Ahmed Zewail won the 1999 Nobel Prize in Chemistry for femtochemistry, capturing transition states in real time. Ti:sapphire lasers produce 10-100 fs pulses; LASIK uses 10-100 fs for precise corneal cuts. At 800 nm, one optical cycle = 2.67 fs. Light travels 300 nm in 1 fs. 1 fs = 10⁻¹⁵ s.
About Attoseconds
An attosecond (as) = 10⁻¹⁸ s - the timescale of electron dynamics in atoms. The Bohr-model orbital period in hydrogen is ~152 as. Electron tunnelling through atomic potential barriers takes a few hundred as. The 2023 Nobel Prize in Physics (Agostini, Krausz, L'Huillier) honoured methods for generating sub-100 as pulses via high-harmonic generation in Ti:sapphire lasers. 1 as = 10⁻¹⁸ s = 1,000 zs.
Quick Reference Table
| Femtoseconds (fs) | Attoseconds (as) |
|---|---|
| 1 fs | 1000 as |
| 2 fs | 2000 as |
| 5 fs | 5000 as |
| 10 fs | 10000 as |
| 25 fs | 25000 as |
| 50 fs | 50000 as |
| 100 fs | 100000 as |