New measurement technique: cw electro‐optic probing of electric fields

1986 ◽  
Vol 49 (8) ◽  
pp. 432-434 ◽  
Author(s):  
Z. H. Zhu ◽  
J‐P. Weber ◽  
S. Y. Wang ◽  
S. Wang
Crystals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 298
Author(s):  
Yannick Minet ◽  
Hans Zappe ◽  
Ingo Breunig ◽  
Karsten Buse

Whispering gallery resonators made out of lithium niobate allow for optical parametric oscillation and frequency comb generation employing the outstanding second-order nonlinear-optical properties of this material. An important knob to tune and control these processes is, e.g., the linear electro-optic effect, the Pockels effect via externally applied electric fields. Due to the shape of the resonators a precise prediction of the electric field strength that affects the optical mode is non-trivial. Here, we study the average strength of the electric field in z-direction in the region of the optical mode for different configurations and geometries of lithium niobate whispering gallery resonators with the help of the finite element method. We find that in some configurations almost 100% is present in the cavity compared to the ideal case of a cylindrical resonator. Even in the case of a few-mode resonator with a very thin rim we find a strength of 90%. Our results give useful design considerations for future arrangements that may benefit from the strong electro-optic effect in bulk whispering gallery resonators made out of lithium niobate.


2011 ◽  
Author(s):  
Huma Ismail ◽  
Ampalavanapillai Nirmalathas ◽  
Efstratios Skafidas

1995 ◽  
Author(s):  
Mehrdad Ziari ◽  
Srinath Kalluri ◽  
Sean M. Garner ◽  
William H. Steier ◽  
Zhiyong Liang ◽  
...  

2002 ◽  
Vol 739 ◽  
Author(s):  
H. McNally ◽  
S. W. Lee ◽  
D. Guo ◽  
M. Pingle ◽  
D. Bergstrom ◽  
...  

ABSTRACTBio-inspired assembly, through the use of bio-molecules such as DNA and proteins, will play a critical role in the advancement of novel sensing techniques and for the realization of heterogeneous integration of materials. For many of these applications, such as antibody-based biosensor and the study of controlled cell growth, DNA and protein patterning techniques are crucial. We will present an update of our work on protein patterning techniques using microelectronic fabrication, DNA hybridization and biotin-streptavidin pairing. To show its application in biological inspired self-assembly, this technique was used successfully in the self-assembly of 20 nm streptavidin conjugated gold particles. In addition, the integration of nano-and micro-scale heterogeneous materials is very important for novel material synthesis and electro-optic applications. We will present an update on our work to assemble silicon electronic devices using DNA/charged molecules and electric fields. Devices are fabricated, released, charged with molecules, and subsequently manipulated in electric fields. The techniques described can be used to integrate the hybrid devices such as nano- or micro-scale resistors, PN diodes, and MOSFETs on silicon or other substrates such as glass, plastic, etc.


1996 ◽  
Vol 69 (2) ◽  
pp. 275-277 ◽  
Author(s):  
Srinath Kalluri ◽  
Sean Garner ◽  
Mehrdad Ziari ◽  
William H. Steier ◽  
Yongqiang Shi ◽  
...  

1999 ◽  
Vol 08 (01) ◽  
pp. 89-105 ◽  
Author(s):  
P. Y. HAN ◽  
G. C. CHO ◽  
X.-C. ZHANG

We present in this article the recent development of the measurement technique for coherent free-space THz field and applications in the mid-infrared range. The technique is based on the second-order nonlinear optical interaction both for the generation and for the detection of THz pulse. Particularly the detection process based on free-space electro-optic sampling gives us a possibility to timely trace directly the ultrabroad band coherent THz field unparalleled by other technique. Using an ultrashort laser pulse our measurement system is feasible to measure the ultrashort THz pulse with a bandwidth up to 40 THz. We present a detailed comparative study on the generation and detection using different nonlinear material. We demonstrate applications of the coherent THz technique for time-resolved semiconductor spectroscopy, time-domain imaging with high spatial resolution and broad band refractive and absorptive characterization of material in the mid-infrared range.


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