Thorlabs provides an extensive selection of lasers and other specialized coherent sources, such as our correlated photon-pair source. Options range from individual laser diodes and DPSS lasers to complete laser solutions such as fiber-coupled lasers, HeNe lasers, nanosecond lasers, picosecond lasers, and femtosecond lasers. Also found here is our selection of semiconductor optical amplifiers, gain chips, and THz antennas. While we stock a selection of pigtailed laser diodes, we can also provide custom laser diode pigtails that utilize either stocked or customer-supplied diodes.