Prism Pair Pulse Compression calculator
GDD of a Brewster prism pair, per pass: angular-dispersion term (−) plus the glass in the beam (+). Fused silica at 800 nm by default.
Category: Laser & Ultrafast
Formula: GDD = (λ³/2πc²)·[Lglass·d²n/dλ² − 4·L·(dn/dλ)²]
Inputs
| Input | Parameter | Unit | Default |
|---|---|---|---|
| Wavelength | lam | nm | 800 |
| Apex separation | L | cm | 50 |
| dn/dλ (1/µm) | dn | -0.01728 | |
| d²n/dλ² (1/µm²) | d2n | 0.03988 | |
| Glass path | Lglass | mm | 5 |
Result with the default inputs
- GDD per pass: -360.67 fs²
- GDD double pass: -721.3399 fs²
- Angular term: -541.4597 fs²
- Glass term: 180.7898 fs²
Open it with your own values: put each input in the address as a parameter, for example /calculators/prism-pair-pulse-compression?lam=800. A unit other than the listed one goes in <parameter>_unit.
Read more: Wikipedia: Chirped pulse amplification