2015/07/03 by W. Tu, Wei Tu, Lin-Bo Shang +21 · 8 citations
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #Diode #Energy conversion efficiency #Laser #Laser beam quality #Laser beams #Materials science #Optics #Optoelectronics #Photorefractive and Nonlinear Optics #Physics #Picosecond #Pulse duration #Solid State Laser Technologies #Ultraviolet
paper · doi:10.1364/ao.54.006182
published in Applied Optics 54(20), 6182 (Optica Publishing Group)
openalex publication_date 2015/07/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/23
An efficient all-solid-state picosecond (ps) ultraviolet (UV) laser at 335 nm was demonstrated based on frequency quadrupling of a mode-locked 1342 nm MOPA system. An output power of 0.95 W was obtained under a fundamental wave power of 16.38 W, corresponding to a conversion efficiency of 5.8% from infrared to UV. The repetition rate and pulse duration were 77 MHz and 20.2 ps, respectively. The beam quality factor M(2) was measured to be 1.56. This is, to the best of our knowledge, the highest output power at 335 nm.