Varius-NL-780-T is a high beam quality tunable 770 nm - 790 nm fiber laser. The Varius-NL-780-T near-IR beam laser series are manufactured using our fiber optical technology, a proprietary technology for intra-cavity doubling of the unpolarised Er-doped fiber laser with the linearly polarized near-IR output (patent pending). Varius key parameters are 0.1 nm step tunable wavelength. Varius-NL-780-T is controlled by the onboard digital display, switches, and adjustment controllers. A full set of control electronics and power supply are included to the delivery package.The control interface software provides optionally. Varius-NL-780-T is a perfect tool for research labs due to excellent performance, high reliability, and lower cost.