Spectrum stability of a broadband 1060 nm Nd-doped fibre laser

Measurements of the spectrum dependence on temperature of a broadband diode-pumped fibre laser, targeted as a source for high grade fibre gyroscopes is reported. With the proper choice of pump wavelength, the temperature of this source need only be stabilised to 0.1°C for a mean laser wavelength stability of 1 ppm, compared to 0.003°C for a superluminescent diode source.