The simplest way to use this technique uses a gain medium and a Fabry-Perot optical cavity, but in more complicated methods it is capable of producing bursts on the order of femtoseconds, making it superior to Q-switching.
Ippen, Haus, and Liu derived a self-starting condition for one form of this technique. Soliton formation can greatly increase the effectiveness of this technique by 10-fold and the Kerr effect is often used in conjunction with this technique to self-focus. This technique requires a high gain-bandwidth product, which makes titanium-doped sapphire a popular material system for it. This technique relies upon a fixed (*) phase separation between light at different frequencies and a round-trip phase change has to be accounted for it to be used. The simplest way to use this technique uses a gain medium and a Fabry-Perot optical cavity, but in more complicated methods it is capable of producing bursts on the order of femtoseconds, making it superior to Q-switching. For 10 points, identify this technique used to create short, intense pulses of laser light, which in the steady state produces a pulse train.
Ippen, Haus, and Liu derived a self-starting condition for one form of this technique.
mode-locking [prompt on partial answers; do not accept "Q-switching"]