The Gooch and Housego EM750 represents a new generation of OEM narrow-linewidth lasers. It is based on the EM650 family of integrated DFB lasers known for their ultra-low noise, stability, and tunability. The new EM750 combines these traits with a patent pending mechanism that retains the advantages of the EM650, but reduces the linewidth to a typical value of <10 kHz. Laser phase noise is significantly reduced for Fourier frequencies below ~15MHz, providing considerable improvements in performance for many linewidth-sensitive applications. The Relative Intensity Noise (RIN) of the EM750 is below -140dBc/Hz between 10 kHz and 40 GHz, making it suitable for the most demanding analog applications. The EM750 is also widely tunable, making it well suited for high-resolution laser spectroscopy.