scholarly journals Spectral characteristics of autofluorescence and second harmonic generation from ex vivo human skin induced by femtosecond laser and visible lasers

Scanning ◽  
2007 ◽  
Vol 28 (6) ◽  
pp. 319-326 ◽  
Author(s):  
Jianxin Chen ◽  
Shuangmu Zhuo ◽  
Tianshu Luo ◽  
Xingshan Jiang ◽  
Jingjun Zhao
Keyword(s):  
Femtosecond Laser ◽  
Second Harmonic Generation ◽  
Human Skin ◽  
Harmonic Generation ◽  
Ex Vivo ◽  
Second Harmonic ◽  
Spectral Characteristics ◽  
Visible Lasers

scholarly journals An Optical Frequency Domain Angle Measurement Method Based on Second Harmonic Generation

Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 670
Author(s):  
Wijayanti Dwi Astuti ◽  
Hiraku Matsukuma ◽  
Masaru Nakao ◽  
Kuangyi Li ◽  
Yuki Shimizu ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Second Harmonic Generation ◽  
Frequency Domain ◽  
Harmonic Generation ◽  
Measurement Method ◽  
Second Harmonic ◽  
Angle Measurement ◽  
Laser Source ◽  
Optical Frequency ◽  
Measurable Range

This paper proposes a new optical angle measurement method in the optical frequency domain based on second harmonic generation with a mode-locked femtosecond laser source by making use of the unique characteristic of the high peak power and wide spectral range of the femtosecond laser pulses. To get a wide measurable range of angle measurement, a theoretical calculation for several nonlinear optical crystals is performed. As a result, LiNbO3 crystal is employed in the proposed method. In the experiment, the validity of the use of a parabolic mirror is also demonstrated, where the chromatic aberration of the focusing beam caused the localization of second harmonic generation in our previous research. Moreover, an experimental demonstration is also carried out for the proposed angle measurement method. The measurable range of 10,000 arc-seconds is achieved.

Second-harmonic generation in plasmas produced by femtosecond laser pulses

1991 ◽  
Vol 43 (8) ◽  
pp. 4564-4567 ◽  
Author(s):  
T. Engers ◽  
W. Fendel ◽  
H. Schüler ◽  
H. Schulz ◽  
D. von der Linde
Keyword(s):  
Femtosecond Laser ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses

Tunable second harmonic generation from a Kerr-lens mode-locked Yb:YCa 4 O(BO 3 ) 3 femtosecond laser

2017 ◽  
Vol 26 (4) ◽  
pp. 044202
Author(s):  
Zi-Ye Gao ◽  
Jiang-Feng Zhu ◽  
Zheng-Mao Wu ◽  
Zhi-Yi Wei ◽  
Hao-Hai Yu ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic

X-ray production and second-harmonic generation during femtosecond laser microdrilling

2015 ◽  
Vol 120 (2) ◽  
pp. 409-415 ◽  
Author(s):  
V. M. Gordienko ◽  
I. A. Zhvaniya ◽  
I. A. Makarov
Keyword(s):  
Femtosecond Laser ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
X Ray
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