1999/07/20 by Jong Rak Park, Tai Hyun Yoon, Myung Sai Chung +1 · 3 citations
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #Birefringence #Diode #Diode-pumped solid-state laser #Faraday effect #Faraday rotator #Fiber laser #Injection seeder #Laser #Laser linewidth #Laser power scaling #Longitudinal mode #Magnetic field #Materials science #Optics #Optoelectronics #Photorefractive and Nonlinear Optics #Physics #Planar #Polarizer #Ring laser #Slope efficiency #Solid State Laser Technologies
paper · doi:10.1364/ao.38.004566
published in Applied Optics 38(21), 4566 (Optica Publishing Group)
openalex publication_date 1999/07/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31
Unidirectional single-mode operation of a diode-pumped Nd:YAG laser with a planar semimonolithic ring cavity has been demonstrated at 1064 nm. The semimonolithic cavity consists of a laser active medium placed in a magnetic field, a crystal quartz plate, and an output coupling mirror, which form an optical diode by acting as a Faraday rotator, a reciprocal polarization rotator, and a partial polarizer, respectively. A single-mode output power of 155 mW and a slope efficiency of 17% were obtained with a 1.2-W diode laser at 809 nm. A laser linewidth of less than 100 kHz is inferred from a beat note frequency spectrum between two identical laser systems and continuous tuning to greater than 2 GHz was observed.