Abstract
Nonlinear absorption of carbon disulfide (CS 2) was investigated by Z-scan technique and time-resolved pumpprobe technique with femtosecond pulses at 400 nm wavelength. By the two techniques, we confirmed that the nonlinear absorption of CS 2 arise from a combination of two-photon absorption (TPA) and the excited state absorption induced by TPA under the incident laser pulses with 400 nm wavelength. The coefficient of TPA, the absorption cross-section of low excited state and lifetime of low excited state were obtained by theoretical fitting the experimental results. The results indicated that the CS 2 has good optical limiting capability at 400 nm wavelength.
| Original language | English |
|---|---|
| Pages (from-to) | 1279-1281 |
| Number of pages | 3 |
| Journal | Physica B: Condensed Matter |
| Volume | 407 |
| Issue number | 8 |
| DOIs | |
| State | Published - 15 Apr 2012 |
Keywords
- Excited state aborption
- Femtosecond
- Two-photon absorption
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