In situ observation of photoinduced refractive-index changes in filaments formed in glasses by femtosecond laser pulses

2001 ◽  
Vol 26 (1) ◽  
pp. 19 ◽  
Author(s):  
Kazuhiro Yamada ◽  
Wataru Watanabe ◽  
Tadamasa Toma ◽  
Kazuyoshi Itoh ◽  
Junji Nishii
Keyword(s):  
Refractive Index ◽  
Femtosecond Laser ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
In Situ Observation ◽  
Index Changes

Photo-induced refractive-index changes in filaments formed in glass with femtosecond laser pulses

2000 ◽  
Author(s):  
Kazuhiro Yamada ◽  
Tadamasa Toma ◽  
Wataru Watanabe ◽  
Junji Nishii ◽  
Kazuyoshi Itoh
Keyword(s):  
Refractive Index ◽  
Femtosecond Laser ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Index Changes

Refractive-index changes of standard telecommunication fiber through exposure to femtosecond laser pulses at 810 cm

2001 ◽  
Vol 40 (21) ◽  
pp. 3506 ◽  
Author(s):  
Eric Fertein ◽  
Christophe Przygodzki ◽  
Hervé Delbarre ◽  
Arif Hidayat ◽  
Marc Douay ◽  
...  
Keyword(s):  
Refractive Index ◽  
Femtosecond Laser ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Index Changes

Residual Strain Measurement of Femtosecond Laser Microexploded Glass by Nanoindentation

2007 ◽  
Vol 364-366 ◽  
pp. 205-209 ◽  
Author(s):  
Shen Dong ◽  
Yan Shen Wang ◽  
Yan Qiang Yang ◽  
Ying Chun Liang ◽  
Tao Sun ◽  
...  
Keyword(s):  
Refractive Index ◽  
Femtosecond Laser ◽  
Residual Strain ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Material Density ◽  
Quartz Wafer ◽  
Residual Strains ◽  
Index Changes ◽  
Set Up

By focusing femtosecond laser pulses in the bulk of a quartz wafer, sub-surface waveguides were microexploded. The material around the femtosecond laser induced microexplosive zone was densified, which altered local refractive index. Changes in material density can take corresponding variations in nanomechanical properties, which were proved by the depth dependent modulus and hardness variations tested by nanoindentation in the area around the microexplosive zone. Changes in refractive index were correlated with residual strains along radial direction of the waveguide cross section. An equation of residual strain in such area that based on nanoindentation data was set up, so as to discover density and refractive index variations in the adjacent areas of femtosecond laser microexplosive zone indirectly.

Estimation of the Refractive Index Change in Glass Induced by Femtosecond Laser Pulses

2000 ◽  
Vol 7 (1) ◽  
pp. 14-17 ◽  
Author(s):  
Tadamasa Toma ◽  
Yoshio Furuya ◽  
Wataru Watanabe ◽  
Kazuyoshi Itoh ◽  
Junji Nishii ◽  
...  
Keyword(s):  
Refractive Index ◽  
Femtosecond Laser ◽  
Refractive Index Change ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Index Change
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