Author Topic: second harmonic generation  (Read 1519 times)

0 Members and 1 Guest are viewing this topic.

Offline Wisam1222

  • Regular QuantumATK user
  • **
  • Posts: 14
  • Country: iq
  • Reputation: 0
    • View Profile
second harmonic generation
« on: August 8, 2021, 10:43 »
Hello Quantum atk users
I tried to Execution second harmonic generation for some crystals, but the result was zero.
Please help me solve this problem.
Execution file is attached
Thank you all

Offline Tue Gunst

  • Heavy QuantumATK user
  • ***
  • Posts: 46
  • Country: dk
  • Reputation: 3
    • View Profile
Re: second harmonic generation
« Reply #1 on: August 10, 2021, 09:47 »
Not all materials are nonlinear optical materials. SHG is zero in systems with inversion symmetry for instance.
I recommend checking the GaAs example for instance on the object to learn about typical parameter settings:
https://docs.quantumatk.com/manual/Types/SecondHarmonicsGenerationSusceptibility/SecondHarmonicsGenerationSusceptibility.html