scholarly journals Quantifying the coherent interaction length of second-harmonic microscopy in lithium niobate confined nanostructures

2021 ◽  
Vol 130 (13) ◽  
pp. 133102
Author(s):  
Zeeshan H. Amber ◽  
Benjamin Kirbus ◽  
Lukas M. Eng ◽  
Michael Rüsing
Keyword(s):  
Lithium Niobate ◽  
Second Harmonic ◽  
Interaction Length ◽  
Coherent Interaction

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 Lithium niobate particles with a tunable diameter and porosity for optical second harmonic generation

RSC Advances ◽  
2022 ◽  
Vol 12 (2) ◽  
pp. 822-833
Author(s):  
Rana Faryad Ali ◽  
Byron D. Gates
Keyword(s):  
Lithium Niobate ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Optical Second Harmonic Generation

Tunable, mesoporous lithium niobate particles with an active optical second harmonic generation (SHG) response.

Recent progress of second harmonic generation based on thin film lithium niobate [Invited]

2021 ◽  
Vol 19 (6) ◽  
pp. 060012
Author(s):  
Yang Li ◽  
Zhijin Huang ◽  
Wentao Qiu ◽  
Jiangli Dong ◽  
Heyuan Guan ◽  
...  
Keyword(s):  
Thin Film ◽  
Lithium Niobate ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Recent Progress ◽  
Second Harmonic

Local fluorescent dye excitation with guided second-harmonic in lithium niobate nanowires

CLEO: 2014 ◽  
2014 ◽  
Author(s):  
Anton Sergeyev ◽  
Reinhard Geiss ◽  
Alexander Solntsev ◽  
Ernst-Bernhard Kley ◽  
Thomas Pertsch ◽  
...  
Keyword(s):  
Lithium Niobate ◽  
Second Harmonic ◽  
Fluorescent Dye
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