Laser light amplifier

Abstract

Abstract PURPOSE:To eliminate a complicated optical system in a device for amplifying a laser light of 1.5mum of wavelength by providing a glass optical fiber having Er and Yb in a core and an exciting light ray, thereby directly amplifying a signal light without applying the amplifying light. CONSTITUTION:A glass optical fiber 7 has a core 8 and a clad 9, the core 8 has an Er (Erbium) for oscillating a laser light of 1.5mum of wavelength when excited by high threshold value, and Yb (Ytterbium) operating as a sensitizer for exciting the Er when absorbing the light of narrow band near 1mum of wavelength. When the signal light is applied from a semiconductor laser 1 through a lens 1 to the fiber 7, the excited light of an arc lamp 6 is received to amplify the laser light (amplified light) of 1.5mum of wavelength oscillated from the Er by the exciting action of the Yb and to then output through a lens 2'.

Inventors

• 👤 Tetsuo Izumitani
• 👤 泉谷　徹郎
• 👤 Sadaichi Suzuki
• 👤 貞一 鈴木

Bibliographic Details