Wide acceptance angle of second harmonic green generation by periodically poled potassium niobate

2003 ◽  
Author(s):  
S. Shichijyo ◽  
J. Hirohashi ◽  
H. Kamio ◽  
K. Yamada
Keyword(s):  
Second Harmonic ◽  
Potassium Niobate ◽  
Acceptance Angle ◽  
Periodically Poled ◽  
Wide Acceptance

Wide Acceptance Angle of Second-Harmonic Green Generation by Periodically Poled Potassium Niobate

2004 ◽  
Vol 43 (5A) ◽  
pp. 2501-2503 ◽  
Author(s):  
Shiro Shichijyo ◽  
Junji Hirohashi ◽  
Hiroyuki Kamio ◽  
Kazuhiro Yamada
Keyword(s):  
Second Harmonic ◽  
Potassium Niobate ◽  
Acceptance Angle ◽  
Periodically Poled ◽  
Wide Acceptance

Periodically poled potassium niobate for second-harmonic generation at 463 nm

1999 ◽  
Vol 24 (16) ◽  
pp. 1154 ◽  
Author(s):  
J.-P. Meyn ◽  
M. E. Klein ◽  
D. Woll ◽  
R. Wallenstein ◽  
D. Rytz
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Potassium Niobate ◽  
Periodically Poled

scholarly journals “Seeing Is Believing”—In-Depth Analysis by Co-Imaging of Periodically-Poled X-Cut Lithium Niobate Thin Films

Crystals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 288
Author(s):  
Sven Reitzig ◽  
Michael Rüsing ◽  
Jie Zhao ◽  
Benjamin Kirbus ◽  
Shayan Mookherjea ◽  
...  
Keyword(s):  
Lithium Niobate ◽  
Second Harmonic ◽  
Imaging Techniques ◽  
Piezoresponse Force Microscopy ◽  
Periodically Poled ◽  
Near Surface ◽  
Domain Structures ◽  
Depth Analysis ◽  
Improved Performance ◽  
Quantum Optical

Nonlinear and quantum optical devices based on periodically-poled thin film lithium niobate (PP-TFLN) have gained considerable interest lately, due to their significantly improved performance as compared to their bulk counterparts. Nevertheless, performance parameters such as conversion efficiency, minimum pump power, and spectral bandwidth strongly depend on the quality of the domain structure in these PP-TFLN samples, e.g., their homogeneity and duty cycle, as well as on the overlap and penetration depth of domains with the waveguide mode. Hence, in order to propose improved fabrication protocols, a profound quality control of domain structures is needed that allows quantifying and thoroughly analyzing these parameters. In this paper, we propose to combine a set of nanometer-to-micrometer-scale imaging techniques, i.e., piezoresponse force microscopy (PFM), second-harmonic generation (SHG), and Raman spectroscopy (RS), to access the relevant and crucial sample properties through cross-correlating these methods. Based on our findings, we designate SHG to be the best-suited standard imaging technique for this purpose, in particular when investigating the domain poling process in x-cut TFLNs. While PFM is excellently recommended for near-surface high-resolution imaging, RS provides thorough insights into stress and/or defect distributions, as associated with these domain structures. In this context, our work here indicates unexpectedly large signs for internal fields occurring in x-cut PP-TFLNs that are substantially larger as compared to previous observations in bulk LN.

scholarly journals A Broadband High-Diffraction-Efficiency Electro-Optic Bragg Deflector Based on Monolithic Dual-Grating Periodically-Poled Lithium Niobate

Photonics ◽  
2021 ◽  
Vol 8 (7) ◽  
pp. 242
Author(s):  
An-Chung Chiang ◽  
Yuan-Yao Lin ◽  
Shou-Tai Lin ◽  
Yen-Yin Lin
Keyword(s):  
Lithium Niobate ◽  
Wave Theory ◽  
Beam Radius ◽  
Acceptance Angle ◽  
Periodically Poled ◽  
Periodically Poled Lithium Niobate ◽  
Electro Optic ◽  
Recent Developments ◽  
Strong Focusing ◽  
Grating Design

Electro-optic (EO) Bragg deflectors have been extensively used in a variety of applications. Recent developments show that bandwidths and deflection efficiencies, as well as angular bandwidths, would significantly limit the utilization of EO Bragg deflectors, especially for applications which need strong focusing, such as intra-cavity applications. In this paper, we introduce a broadband EO Bragg deflector based on periodically-poled lithium niobate with a monolithic dual-grating design. We analyzed the deflection properties of this device by using a modified coupled wave theory and showed that this device can be still efficient for a small beam radius under strong focusing, whereas a single-grating one becomes very inefficient. Using a 1064-nm laser beam with a 100-μm beam radius, we obtained a 74% deflection efficiency with a 190-V bias voltage with a 0.5-mm-thick and 7.5-mm-long dual-grating sample. The acceptance angle for the Bragg condition of this device is as large as a few tens of mrad. The potential bandwidth of this device exceeds 500 nm if the proper operation region is chosen.

scholarly journals Second Harmonic Generation Using an All-Fiber Q-Switched Yb-Doped Fiber Laser and MgO:c-PPLN

2008 ◽  
Vol 2008 ◽  
pp. 1-6 ◽  
Author(s):  
Yi Gan ◽  
Xijia Gu ◽  
Joyce Y. C. Koo ◽  
Wanguo Liang ◽  
Chang-qing Xu
Keyword(s):  
Second Harmonic Generation ◽  
Fiber Laser ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Laser System ◽  
Average Output ◽  
Periodically Poled ◽  
Theoretical Simulation ◽  
Periodically Poled Lithium Niobate ◽  
532 Nm

We have experimentally demonstrated an efficient all-fiber passively Q-switched Yb-doped fiber laser with Samarium doped fiber as a saturable absorber. Average output power of 3.4 W at a repetition rate of 250 kHz and a pulse width of 1.1 microseconds was obtained at a pump power of 9.0 W. By using this fiber laser system and an MgO-doped congruent periodically poled lithium niobate (MgO:c-PPLN), second harmonic generation (SHG) output at 532 nm was achieved at room temperature. The conversion efficiency is around 4.2% which agrees well with the theoretical simulation.

Second-harmonic generation in a periodically poled congruent LiTaO3 sample with phase-tuned nonlinear Cherenkov radiation

2012 ◽  
Vol 100 (2) ◽  
pp. 022905 ◽  
Author(s):  
Huang Huang ◽  
Cheng-Ping Huang ◽  
Chao Zhang ◽  
Ding Zhu ◽  
Xu-Hao Hong ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Cherenkov Radiation ◽  
Second Harmonic ◽  
Periodically Poled
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