Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Toru Tajime"'
Publikováno v:
Optics Communications. 184:231-236
A high repetition rate diode-pumped Nd:YAG rod master-oscillator power-amplifier system was designed, fabricated and tested. The system provides a maximum average power of 222 W at a repetition rate of 2.5 kHz with a pulse width of 51 ns. With an ext
Publikováno v:
Optics Communications. 170:275-280
We describe a diode-pumped master-oscillator power-amplifier system with two-rod Nd:YAG media and double-stage relay optics scheme. At the repetition rate of 2.4 kHz it delivers an average power of 108 W with Q-switched pulses of 47 ns duration. The
Publikováno v:
Optical Review. 5:310-314
We propose a new detection method for a pseudo-random frequency modulation continuous wave (RM-CW) coherent lidar. The feature of this method is modulation of local beam with a time delayed pseudo-random sequence. Heterodyne detection and correlation
Publikováno v:
Applied optics. 33(34)
We have introduced an athermal chart that plots chromatic dispersive power and thermal dispersive power on a Cartesian coordinate, and we give the design method of a multilens system in contact that satisfies achromatism and athermalization. The adva
Publikováno v:
Applied optics. 18(4)
Publikováno v:
Applied optics. 17(8)
The absorption by the gamma-0 band of nitric oxide at 2260 A has been studied. Its apparent absorption cross section depends both on total pressure and its concentration. In order to investigate these absorption characteristics quantitatively, a line
Publikováno v:
Applied optics. 39(6)
A new cavity for diode side-pumped solid-state lasers was designed, built, and tested. The results were efficient absorption of pumped light in the media and homogeneous pumped-beam distribution under various pump-power levels, which generated Nd:YAG
Autor:
Osamu Uchino, Shinichi Ueno, Yoshihito Hirano, T. Yanagisawa, T. Nagai, Toru Tajime, Chikao Nagasawa
Publikováno v:
Optics letters. 25(16)
A high-average-power conduction-cooled diode-pumped Nd:YLF rod laser has been developed. A new conduction-cooled side-pumping scheme with a solid prismatic pump-light confinement cavity was employed. A transparent, high-thermal-conductivity MgF(2) pr
Autor:
Yoshihito Hirano, Toshiyuki Ando, Kimio Asaka, Toru Tajime, Takahiko Fujisaka, Shumpei Kameyama, Yasuharu Koyata, Shusou Wadaka
Publikováno v:
SPIE Proceedings.
In this paper, a new signal processing method named SCCI (Self- Compensated Coherent Integration) which enables a coherent integration over a longer time, compared to a coherence time of a back-scattered signal, is proposed. A back-scattered signal i
Publikováno v:
SPIE Proceedings.
For multiband sensor applications we propose an optical system that forms different spectral images with a constant magnification and distortion over all spectral bands. Spectral filter devices are introduced for three major purposes; for determining