Recently, researchers from the Shanghai Institute of Optics and Fine Mechanics (SIOM) of the Chinese Academy of Sciences (CAS) have provided the new idea of co-pumping single-frequency Raman amplifiers. Relevant result was published in Optics Express on May 7.
Click here for original story, Amplified spontaneous emission source in a co-pumping, single-frequency Raman fiber amplifier
Source: Phys.org