Double-Peaked Mid-Infrared Generation Based on Intracavity Difference Frequency Generation

It was reported that a double-peaked mid-infrared laser generated based on an intracavity difference frequency generation (DFG). The pump source achieved by suppressing the intensity at central wavelength of source. had spacing 23–37 nm, and full width half-peak (FWHM) peaks up to 30 nm. demonstrated tilted Bragg fiber grating (TFBG) with specific transmission spectral depth bandwidth can generate controllable spacing. first near-infrared pumping modulation. Furthermore, tunable, FWHMs were DFG. high potential for monitoring absorption gas molecules differential lidar (DIAL).