For a customer who wanted to insert their own optics, we developed a 20-W, frequency-doubled laser with a head that included a mini optical breadboard. Below, the laser head drawing (cover off) shows a system with two Gain Modules, one an oscillator, the other an amplifier, along with a second-harmonic generator and a region for customer optics. The system produces 20 W of Q-switched average power at 532.5 nm.
The drawing below shows a laser head (cover off) designed to generate three different wavelengths, 1047, 523.5 and 262 nm, with Q-switched average powers of 40, 20 and 4 W, respectively. The user can select the wavelength under remote control, with motorized mirror mounts directing the beams through second- and fourth-harmonic generators, as required. The system uses two Nd:YLF Gain modules, one employed as an oscillator, the other as an amplifier.
This complex system, with drawings below showing exploded and assembled views, provides Q-switched, 351-nm pulses tuned to drive an excimer laser. The devices generates a two-beam output, each with an average power of 6 W, and employs a 1053-nm, Nd:YLF master oscillator and six Nd:YLF Gain Modules to produce the required output power. In the design shown, the harmonic-generating optics are located on a shelf above the optical base for the Gain-Modules.
