Title :
1.5-/spl mu/m coherent lidar using a single-longitudinal-mode diode-pumped Q-switched Er,Yb:glass laser
Author :
Yanagisawa, T. ; Asaka, K. ; Hirano, Y.
Author_Institution :
Inf. Technol. R&D Center, Mitsubishi Electr. Corp., Kanagawa, Japan
Abstract :
Summary form only given. Coherent lidar is a useful sensor for wind velocity detection in clear air conditions. Coherent lidars in the eye-safe wavelength region (>1.4 /spl mu/m) with 2-/spl mu/m pulsed lasers such as Ho,Tm:YAG or Tm:YAG were developed because eye-safety is required for laser equipment used in the field. Compared to the wavelength of 2-/spl mu/m, the maximum permissible exposure for human eyes is ten times higher at the wavelength of 1.5-/spl mu/m. In addition, reliable optical fiber components and devices for optical fiber communication are easily available at this wavelength. We have developed a 1.5-/spl mu/m coherent lidar using a single-longitudinal-mode diode-pumped Q-switched Er,Yb:glass laser with an injection seeding and a cavity length controller.
Keywords :
Q-switching; atmospheric measuring apparatus; erbium; laser beams; laser cavity resonators; laser modes; optical glass; optical pumping; optical radar; remote sensing by laser beam; solid lasers; wind; ytterbium; 1.5 mum; Er,Yb:glass laser; Q-switched laser; cavity length controller; clear air condition; coherent lidar; eye-safe wavelength region; human eyes; injection seeding; laser equipment; maximum permissible exposure; optical fiber communication; pulsed lasers; reliable optical fiber components; reliable optical fiber devices; single-longitudinal-mode diode-pumped laser; wind velocity detection; Diodes; Eyes; Fiber lasers; Humans; Laser radar; Optical control; Optical fiber communication; Optical fibers; Optical pulses; Wind speed;
Conference_Titel :
Lasers and Electro-Optics, 2000. (CLEO 2000). Conference on
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
1-55752-634-6
DOI :
10.1109/CLEO.2000.907219
