Which outcome occurs when a pulsed laser with wavelength near the material's bandgap illuminates a semiconductor?

💡 Explanation

When a high-intensity laser pulse impacts a semiconductor near its bandgap, two-photon absorption can occur because two photons simultaneously provide enough energy to excite an electron across the bandgap, generating electron-hole pairs. Therefore two-photon absorption results, rather than increased transparency, or thermal lensing, which require specific intensity and thermal conditions; or Raman scattering which has different energy transfer patterns.

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