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850nm VCSEL with a liquid crystal overlay

Veena M Nair, Krassimir Panajotov, Minko Petrov, Hugo Thienpont, Yi Xie UGent, Jeroen Beeckman UGent and Kristiaan Neyts UGent (2012) PROCEEDINGS OF SPIE, THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING. 8432. p.84321X1-84321X6
abstract
We developed an in- house technology to overlay liquid crystal (LC) on top of a 850nm Vertical Cavity Surface Emitting Laser (VCSEL) creating a so-called LC-VCSEL. Prior to this, the effect of the cell thickness on the planar alignment of the E7 LC is investigated. It is observed that the LC orientation is planar, uniformly aligned over the whole cell with an average pre-tilt of 22.5 0 in a thin a cell of 13mum thickness; such alignment uniformity is not observed in a thick cell of 125mum. Nevertheless, several domains of good uniformity are still present. Further, the polarization resolved LI characteristics of LC-VCSEL are investigated with and without the insertion of LC in a cell glued directly onto VCSEL package. Before filling in the LC, the VCSEL emits linearly polarized light and this linear polarization is lost after LC filling. The output intensity as a function of polarizer angle shows partial planar alignment of the E7 LC, which is very important for the further advancement of the LC-VCSEL integrated system.
Please use this url to cite or link to this publication:
author
organization
year
type
conference
publication status
published
subject
keyword
OPTICAL FEEDBACK, SUBJECT, POLARIZATION PROPERTIES, SHORT EXTERNAL-CAVITY, LASER
in
PROCEEDINGS OF SPIE, THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING
Proc. SPIE Int. Soc. Opt. Eng.
editor
K Panajotov, M Sciamanna, A Valle and R Michalzik
volume
8432
article_number
84321X
pages
84321X1 - 84321X6
publisher
SPIE
place of publication
Bellingham, WA, USA
conference name
Conference on Semiconductor Lasers and Laser Dynamics V
conference location
Brussels, Belgium
conference start
2012-04-16
conference end
2012-04-19
Web of Science type
Proceedings Paper
Web of Science id
000305707200047
ISSN
0277-786X
ISBN
9780819491244
DOI
10.1117/12.922238
project
FWO
language
English
UGent publication?
yes
classification
P1
copyright statement
I have transferred the copyright for this publication to the publisher
id
2943679
handle
http://hdl.handle.net/1854/LU-2943679
date created
2012-06-29 11:49:27
date last changed
2012-08-28 13:26:54
@inproceedings{2943679,
  abstract     = {We developed an in- house technology to overlay liquid crystal (LC) on top of a 850nm Vertical Cavity Surface Emitting Laser (VCSEL) creating a so-called LC-VCSEL. Prior to this, the effect of the cell thickness on the planar alignment of the E7 LC is investigated. It is observed that the LC orientation is planar, uniformly aligned over the whole cell with an average pre-tilt of 22.5 0 in a thin a cell of 13mum thickness; such alignment uniformity is not observed in a thick cell of 125mum. Nevertheless, several domains of good uniformity are still present. Further, the polarization resolved LI characteristics of LC-VCSEL are investigated with and without the insertion of LC in a cell glued directly onto VCSEL package. Before filling in the LC, the VCSEL emits linearly polarized light and this linear polarization is lost after LC filling. The output intensity as a function of polarizer angle shows partial planar alignment of the E7 LC, which is very important for the further advancement of the LC-VCSEL integrated system.},
  articleno    = {84321X},
  author       = {Nair, Veena M and Panajotov, Krassimir and Petrov, Minko and Thienpont, Hugo and Xie, Yi and Beeckman, Jeroen and Neyts, Kristiaan},
  booktitle    = {PROCEEDINGS OF SPIE, THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING},
  editor       = {Panajotov, K and  Sciamanna, M and Valle, A and Michalzik, R },
  isbn         = {9780819491244},
  issn         = {0277-786X},
  keyword      = {OPTICAL FEEDBACK,SUBJECT,POLARIZATION PROPERTIES,SHORT EXTERNAL-CAVITY,LASER},
  language     = {eng},
  location     = {Brussels, Belgium},
  pages        = {84321X:84321X1--84321X:84321X6},
  publisher    = {SPIE},
  title        = {850nm VCSEL with a liquid crystal overlay},
  url          = {http://dx.doi.org/10.1117/12.922238},
  volume       = {8432},
  year         = {2012},
}

Chicago
Nair, Veena M, Krassimir Panajotov, Minko Petrov, Hugo Thienpont, Yi Xie, Jeroen Beeckman, and Kristiaan Neyts. 2012. “850nm VCSEL with a Liquid Crystal Overlay.” In Proceedings of Spie, the International Society for Optical Engineering, ed. K Panajotov, M Sciamanna, A Valle, and R Michalzik, 8432:84321X1–84321X6. Bellingham, WA, USA: SPIE.
APA
Nair, V. M., Panajotov, K., Petrov, M., Thienpont, H., Xie, Y., Beeckman, J., & Neyts, K. (2012). 850nm VCSEL with a liquid crystal overlay. In K. Panajotov, M. Sciamanna, A. Valle, & R. Michalzik (Eds.), PROCEEDINGS OF SPIE, THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING (Vol. 8432, pp. 84321X1–84321X6). Presented at the Conference on Semiconductor Lasers and Laser Dynamics V, Bellingham, WA, USA: SPIE.
Vancouver
1.
Nair VM, Panajotov K, Petrov M, Thienpont H, Xie Y, Beeckman J, et al. 850nm VCSEL with a liquid crystal overlay. In: Panajotov K, Sciamanna M, Valle A, Michalzik R, editors. PROCEEDINGS OF SPIE, THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING. Bellingham, WA, USA: SPIE; 2012. p. 84321X1–84321X6.
MLA
Nair, Veena M, Krassimir Panajotov, Minko Petrov, et al. “850nm VCSEL with a Liquid Crystal Overlay.” Proceedings of Spie, the International Society for Optical Engineering. Ed. K Panajotov et al. Vol. 8432. Bellingham, WA, USA: SPIE, 2012. 84321X1–84321X6. Print.