TOPTICA CW Raman Fiber Amplifiers

TOPTICA’s Raman Fiber Amplifiers (RFAs) cover the wavelength range from 1120 to 1370 nm that is not accessible by Yb or Er fibre amplifiers. For wavelengths outside this range, users can enquire about a custom system.

The RFA offers a wide tuning range of up to 10 nm; high power up to 30 W; a maintenance-free platform design; a relative intensity noise <1% RMS (10 Hz–10 MHz); and long-term RMS power stability of less than 0.5% over 100 h (with a TA pro seed laser). The all-fibre design requires no realignment and provides a high degree of stability.

The product utilises the DL pro or TA pro as a seed laser, enabling a seamless integration into the TOPTICA environment of, for example, wavelength stabilisation options. Users can also utilise the third-party seed laser of their choice.

To reach visible and UV wavelengths, the RFA can be integrated with TOPTICA’s SHG and FHG portfolio of frequency doubling and quadrupling systems. With these, high power in the visible wavelengths (eg, more than 15 W at 589 nm) can be achieved while maintaining tunability over the entire RFA tuning range. For UV wavelengths the RFAs can be combined with FHG systems, drawing on TOPTICA’s extensive experience of custom (D)UV systems, while also maintaining full tunability.

The system consists of two modules: the Fiber Pump Module, providing pump light for the RFA module; and the Raman Fiber Amplifier Module, with inputs from the pump module and the seed laser.