Sample interview questions: What are some common techniques for achieving mode-locked laser output?
Sample answer:
Common Techniques for Achieving Mode-Locked Laser Output:
- Active Mode-Locking:
- Utilizing an electro-optic modulator (EOM) or acousto-optic modulator (AOM) to introduce periodic phase modulation or amplitude modulation.
- Requires an external radio frequency (RF) or microwave signal source.
- Passive Mode-Locking:
- Kerr-lens Mode-Locking (KLM): Exploiting the self-focusing and self-phase modulation properties of nonlinear materials to create a dynamic intracavity intensity filter.
- Semiconductor Saturable Absorber Mode-Locking (SESAM): Incorporating a semiconductor quantum well structure within the laser cavity, which acts as a saturable a… Read full answer