Visit the University Bookstore for trendy CSULB attire, gifts, textbooks, supplies, computer products and much more! Phone: (562) 985-5093.
A mode-locked laser is capable of emitting extremely short pulses on the order of tens of picoseconds down to less than 10 femtoseconds. These pulses will repeat at the round trip time, that is, the time that it takes light to complete one round trip between the mirrors comprising the resonator.
All you need is a function generator to produce the modulation signal. The electronic modulation circuit controls the power delivered to the laser diode, so it is directly turning the laser on and off. This type of modulation can also control the output power of the laser by reducing the electrical power delivered to the laser diode. The maximum response frequency of this type of modulation is usually around 30 kHz, though this varies by model and some may be lower.