Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Mahendra Prabhu"'
Autor:
T. Jayakumar, S. Murugan, N Mahendra Prabhu, C. K. Mukhopadhyay, S. Venugopal, K.A. Gopal, T.K. Haneef
Publikováno v:
International Journal of Structural Integrity. 6:410-418
Purpose – The purpose of this paper is to determine the feasibility of identifying the creep rupture of reactor cladding tubes using acoustic emission technique (AET). Design/methodology/approach – The creep rupture tests were carried out by pres
Autor:
Ken-ichi Ueda, Akira Shirakawa, S. Hirose, Atsushi Taniguchi, Mahendra Prabhu, Jianren Lu, Mitsuru Musha
Publikováno v:
Applied Physics B. 77:205-210
Using a phosphosilicate-doped continuous-wave Raman fiber laser, a 350-m single-mode fiber, and a 50% feedback fiber Bragg grating at 1483.4 nm, we obtained a high-efficiency ultra-broadband (1434–1527 nm) supercontinuum (SC) centered at 1483.4 nm
Publikováno v:
Journal of Modern Optics. 48:1269-1279
A new type of fibre Raman laser composed of a GeO2- and P2O5-doped silica fibre was investigated experimentally and theoretically. The output of the laser displays two difference characteristics depending on the type of fibre being used as the input
Publikováno v:
The Review of Laser Engineering. 29:90-93
Autor:
Cuihong Li, Jingjun Xu, Ken-ichi Ueda, Hideki Yagi, Takakimi Yanagitani, Jianren Lu, Jie Song, A. A. Kaminskii, Mahendra Prabhu
Publikováno v:
Applied Physics B: Lasers and Optics. 71:469-473
Optical absorption, emission spectra have been measured for polycrystalline Nd-doped Y3Al5O12 ceramics. Fluorescence lifetimes of 257.6 μs, 237.6 μs, 184.2 μs and 95.6 μs have been obtained for 0.6%, 1%, 2% and 4% neodymium-doped YAG ceramics, re
Publikováno v:
Optical Review. 7:455-461
A continuous wave (CW) high-power Raman fiber laser (RFL) with maximum output power of 2.24 W and slope efficiency of 32.8% at 1484 nm is obtained using a CW 8.4 W/ 1064 nm Yb-doped double-clad fiber laser as a pump, 700 m phosphosilicate fiber, and
Publikováno v:
Optics Communications. 182:305-309
High-power two-color CW Raman fiber laser is obtained with simultaneous outputs at 1239 nm and 1484 nm which uses CW 8.4 W Yb-doped double-clad fiber laser at 1064 nm as a pump, phosphosilicate fiber, and cascaded cavities consisting of two pairs of
Publikováno v:
Optical Review. 7:277-280
Simultaneous double-color high-power continuous wave (CW) Raman fiber laser at 1239 nm and 1484 nm is demonstrated which uses CW 8.4 W Yb-doped double-clad fiber laser at 1064 nm as a pump, 1 km phosphosilicate fiber, and cascaded cavities consisting
Publikováno v:
Optical Review. 7:297-302
A high-power singlemode Raman fiber laser (RFL) with maximum output power of 4.11 W and maximum power conversion efficiency of 47.40% at 1239 nm is realized using continuous wave 8.4 W Yb-doped double-clad fiber laser as a pump, 700 m phosphosilicate
Autor:
Anping Liu, Nam Seong Kim, Ken-ichi Ueda, Hong Jin Kong, Jie Song, Mahendra Prabhu, Toshihiro Hamada, Cheng Li
Publikováno v:
Optics Communications. 180:329-337
Numerical analysis is investigated for the high-power double-clad fiber lasers and experimental results using different microscope objectives for focusing into a Nd-doped rectangular double-clad fiber also performed. The numerical analysis includes d