Second harmonic generation in the tilted type-I Dirac metals under terahertz frequency regime

2021 ◽  
Vol 128 ◽  
pp. 114604
Author(s):  
Li-fang Liang ◽  
Xiao-kang Dai ◽  
Qin-jun Chen
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Type I ◽  
Terahertz Frequency ◽  
Frequency Regime

Li8NaRb3(SO4)6·2H2O as a new sulfate deep-ultraviolet nonlinear optical material

2018 ◽  
Vol 6 (45) ◽  
pp. 12240-12244 ◽  
Author(s):  
Yanqiang Li ◽  
Sangen Zhao ◽  
Pai Shan ◽  
Xianfeng Li ◽  
Qingran Ding ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Optical Material ◽  
Type I ◽  
Nonlinear Optical Material ◽  
Deep Ultraviolet

A new sulfate Li8NaRb3(SO4)6·2H2O exhibits a short cutoff edge below λ < 190 nm and has a moderate second-harmonic generation response in type-I phase-matchable behavior.

THE INFLUENCE OF THE ORIENTATION OF THE COLLAGEN DIPOLES ON SECOND HARMONIC GENERATION (SHG) WITH HIGH NA UNDER CRYSTALLIZED TYPE I COLLAGEN FIBER MODEL

2012 ◽  
Vol 26 (29) ◽  
pp. 1250148
Author(s):  
FEI FEI WANG ◽  
JIAN MEI LIU ◽  
XIAO YUAN DENG
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Collagen Fiber ◽  
Type I Collagen ◽  
Second Harmonic ◽  
Numerical Aperture ◽  
Orientation Angle ◽  
Type I ◽  
Dipole Orientation ◽  
First Time

In this paper, for the first time, we consider theoretically all the potential orientations of dipoles for second harmonic generation (SHG) under crystallized type I collagen fiber. With high numerical aperture ( NA = 14), the effect of dipole orientation angle Φ on the SHG intensity, on the maximum SHG emergence angles (θ max , φ max ) and the action of these dipole sources on the ratio of forward to backward (F/B) SHG have been studied under different cases of fibrils diameter d1 and the QPM order (m, l) in the crystallized collagen fiber, and it is found that the influential patterns of the same Φ on SHG at different fibrils diameter d1 and the QPM order (m, l) are different. The dipoles arrangement is related to the characteristic changes in biological tissue so that our work may provide a helpful theoretical tool for pathological status detecting.

Generation of Tunable Near-UV Laser Radiation by Type-I Second-Harmonic Generation in a New Crystal, K2Al2B2O7(KABO)

2003 ◽  
Vol 42 (Part 2, No. 10B) ◽  
pp. L1255-L1258 ◽  
Author(s):  
Pathik Kumbhakar ◽  
Shunsuke Adachi ◽  
Zhang-Gui Hu ◽  
Masashi Yoshimura ◽  
Yusuke Mori ◽  
...  
Keyword(s):  
Laser Radiation ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Type I ◽  
Uv Laser

scholarly journals Type I and type II second harmonic generation of conically refracted beams

2013 ◽  
Vol 38 (14) ◽  
pp. 2484 ◽  
Author(s):  
Alex Turpin ◽  
Yurii V. Loiko ◽  
Todor K. Kalkandjiev ◽  
Jose Trull ◽  
Crina Cojocaru ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Type I ◽  
Type Ii

scholarly journals Stokes polarimetry-based second harmonic generation microscopy for collagen and skeletal muscle fiber characterization

2020 ◽  
Author(s):  
Nirmal Mazumder ◽  
Fu-Jen Kao
Keyword(s):  
Skeletal Muscle ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Muscle Fiber ◽  
Collagen Type ◽  
Second Harmonic ◽  
Collagen Type I ◽  
Skeletal Muscle Fiber ◽  
Type I ◽  
Stokes Vector

Abstract The complete polarization state of second harmonic (SH) light was measured and characterized by collagen type I and skeletal muscle fiber using a Stokes vector-based SHG microscope. The polarization states of the SH signal are analyzed in a pixel-by-pixel manner and displayed through two dimensional (2D) Stokes vector images. Various polarization parameters are reconstructed using Stokes values to quantify the polarization properties of SH light. Also, the measurements are extended for different input polarization states to investigate the molecular structure of second harmonic generation (SHG) active molecules such as collagen type I and myosin.

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