| 摘要 |
PROBLEM TO BE SOLVED: To provide a laser beam incident optical device which is capable of transmitting a laser beam L from a giant-pulse-oscillation system having a peak power of over 10MW by an optical fiber 101. SOLUTION: A step-index-type optical fiber 101 made of a material containing quartz, and having clad thickness 0.035-0.1 times the core diameter and a numerical aperture NA of 0.06-0.22 is used. The laser beam L from a giant-pulse-oscillation system solid laser oscillator 111 having a peak power of over 10 MW is shown divergently to the incident end surface 102 of the optical fiber 101, whereby enabling the laser beam L to be transmitted without damaging the optical fiber 101. COPYRIGHT: (C)2005,JPO&NCIPI
|
