TTL (Transistor-Transistor Logic) modulation is a method of controlling a laser’s output by using an external electrical signal to turn the laser on and off. This allows the laser to be modulated at a high frequency, which is useful in applications such as laser scanning and optical communication.

There are two main types of TTL modulation: analog and digital.

Analog TTL modulation uses an analog voltage signal to control the laser’s output. The voltage level of the signal determines the amount of laser power that is emitted. This allows for continuous and smooth control of the laser’s output, which is useful in applications where precise control of the laser power is required.

Digital TTL modulation, on the other hand, uses a digital signal to control the laser’s output. The digital signal is either on or off, which corresponds to the laser being on or off. This allows for fast switching of the laser’s output, which is useful in applications such as data transmission and laser scanning.

Both analog and digital TTL modulation have their own advantages and disadvantages, and the appropriate type of modulation will depend on the specific application and the requirements of the system.

Power Technology provides a variety of laser modules that offer both analog and TTL modulation options.