Model extreme laser interactions with practical engineering inputs. Compare Kerr shift, transmission, and focusing risk. Export clean reports, graphs, and sample calculations for review.
Gaussian beams use a spatial factor of 2. Top-hat beams use 1. Gaussian pulses use a temporal factor of 0.94. Sech² pulses use 0.88. The calculator converts all entries to SI units before solving.
| Case | Wavelength | Peak Power | Beam Radius | n2 | Length | Approx. B-Integral |
|---|---|---|---|---|---|---|
| Fused silica ultrafast setup | 800 nm | 8 MW | 30 µm | 2.7e-16 cm²/W | 5 mm | 0.38 rad |
| BK7 picosecond test | 1064 nm | 3 MW | 50 µm | 3.2e-16 cm²/W | 10 mm | 0.09 rad |
| High nonlinearity glass path | 1550 nm | 0.5 MW | 3 µm | 1.0e-14 cm²/W | 2 mm | 15.20 rad |
Intense field nonlinear optics appears when laser light becomes strong enough to change the medium it enters. The refractive index can rise with intensity. Absorption can also increase. These effects shape pulse compression, spectral broadening, harmonic generation, filament studies, and laser damage reviews. Engineers need fast estimates before they move to expensive experiments or full wave simulations. A compact calculator helps screen design choices early. It also highlights unsafe combinations of power, beam size, and material length.
This tool estimates peak intensity, electric field, pulse energy, average power, peak fluence, Kerr index shift, and nonlinear phase shift. It also checks critical power for self-focusing. That value matters in bulk media and free-space transport. If the applied power approaches the critical level, the beam can collapse or reshape. The calculator also estimates two-photon absorption transmission. That is useful in semiconductors, specialty glasses, and high-field diagnostics. The damage margin adds another practical checkpoint for engineering work.
A small B-integral often means phase distortion remains manageable. Values near one radian deserve attention. Values above three radians usually indicate strong spectral and spatial change. The self-focusing ratio should stay comfortably below one in many stable systems. Peak fluence should remain below the tested damage threshold with design margin. Strong nonlinear absorption may protect against some transmission peaks, but it can still create heat and loss. The graph helps show how phase shift and transmission move as peak power changes.
Use this calculator for fast engineering comparisons. Change beam radius first. That single parameter strongly changes intensity, fluence, nonlinear phase, and self-focusing tendency. Then test wavelength, length, and material choice. Lower n2 and shorter paths reduce Kerr phase. Larger beams reduce field strength and fluence. Repetition rate mainly changes thermal loading through average power. Final hardware decisions still need measured material data, dispersion models, and safety testing. Yet these first-pass numbers are highly useful during concept screening and lab planning.
It measures accumulated nonlinear phase shift through the material. Larger values mean stronger Kerr-driven phase distortion and a greater chance of spectral or spatial reshaping.
Intensity depends on area. A small radius sharply raises intensity, electric field, fluence, Kerr shift, and self-focusing risk. It is often the most sensitive design input.
It is the applied peak power divided by critical power. Ratios near or above one suggest strong self-focusing risk in the selected medium.
Not directly in this simplified model. Repetition rate changes average power and thermal loading. Peak power mainly controls instantaneous nonlinear optical effects.
Two-photon absorption lowers transmission at high intensity. It can limit useful throughput, create heat, and alter the balance between Kerr phase and material loss.
Yes, as a first estimate. Use an effective beam radius that matches the guided mode. Final waveguide design should still include confinement and dispersion details.
Use the shape that best matches your laser. Gaussian and sech² pulses convert peak power to pulse energy differently. That changes fluence and average power outputs.
No. It is a strong screening tool. Final approval should include measured material data, environmental factors, optical coatings, and documented laser safety procedures.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.