A high power continuous-wave single-frequency green fiber laser by second-harmonic generation of a Yb-doped fiber amplifier (YDFA) is developed. A linearly polarized single-mode fiber amplifier produces a 60 W infrared laser at 1064 nm with a 103 W incide
We propose and demonstrate two types of narrowband multi-channel filters: transmittance-integrated narrow-bandpass filter arrays and reflectance narrowband multi-channel filters. We develop a combinatorial etching technique possessing 32 elements on a sin