High slope efficiency, low threshold and wavelength tunable liquid crystal lasers using bimesogenic materials: a route to quasi-continuous working and incoherent optical pumping?

2008 ◽  
Keyword(s):  
Liquid Crystal ◽  
Slope Efficiency ◽  
Optical Pumping ◽  
High Slope ◽  
Wavelength Tunable ◽  
Low Threshold ◽  
Liquid Crystal Lasers ◽  
Continuous Working

High slope efficiency liquid crystal lasers

2010 ◽  
Vol 97 (25) ◽  
pp. 251109 ◽  
Author(s):  
Carrie Mowatt ◽  
Stephen M. Morris ◽  
Timothy D. Wilkinson ◽  
Harry J. Coles
Keyword(s):  
Liquid Crystal ◽  
Slope Efficiency ◽  
High Slope ◽  
Liquid Crystal Lasers

Development of Laser Dyes to Realize Low Threshold in Dye-Doped Cholesteric Liquid Crystal Lasers

2010 ◽  
Vol 22 (40) ◽  
pp. 4473-4478 ◽  
Author(s):  
Makoto Uchimura ◽  
Yo Watanabe ◽  
Fumito Araoka ◽  
Junji Watanabe ◽  
Hideo Takezoe ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Cholesteric Liquid Crystal ◽  
Laser Dyes ◽  
Low Threshold ◽  
Liquid Crystal Lasers

scholarly journals High slope efficiency and low threshold in a diode-pumped epitaxially grown Yb:YAG waveguide laser

1995 ◽  
Vol 115 (5-6) ◽  
pp. 491-497 ◽  
Author(s):  
D Pelenc ◽  
B Chambaz ◽  
I Chartier ◽  
B Ferrand ◽  
C Wyon ◽  
...  
Keyword(s):  
Slope Efficiency ◽  
Waveguide Laser ◽  
High Slope ◽  
Diode Pumped ◽  
Low Threshold

scholarly journals High Slope Efficiency and Low Threshold in a Diode Pumped Epitaxially Grown Yb:YAG Waveguide Laser

1993 ◽  
Vol 329 ◽  
Author(s):  
Isabelle Chartier ◽  
C. Wyon ◽  
D. Pelenc ◽  
B. Ferrand ◽  
D. P. Shepherd ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Slope Efficiency ◽  
Planar Waveguide ◽  
Room Temperature ◽  
Planar Waveguides ◽  
Laser Operation ◽  
Waveguide Laser ◽  
High Slope ◽  
Diode Pumped ◽  
Low Threshold

AbstractWe report the 1.03 μm laser operation of a diode-pumped Yb doped YAG planar waveguide at room temperature. The fabrication of multilayer planar waveguides by Liquid Phase Epitaxy and their characterization are also described.Laser results (40 mW threshold, 80 % slope efficiency) obtained with a 2.9 % output coupler compares favourably with bulk results reported elsewhere.

scholarly journals Dynamic upconversion multicolour editing enabled by molecule-assisted opto-electrochemical modulation

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yiming Wu ◽  
Jiahui Xu ◽  
Xian Qin ◽  
Jun Xu ◽  
Xiaogang Liu
Keyword(s):  
Optical Pumping ◽  
Logic Gate ◽  
Energy Levels ◽  
Upconversion Emission ◽  
Orbital Energy ◽  
Optical Signals ◽  
Precise Control ◽  
Technological Developments ◽  
Low Threshold ◽  
Anti Stokes

AbstractControlling nonlinear optical signals electrically offers many opportunities for technological developments. Lanthanide-activated nanoparticles have recently emerged as leading platforms for nonlinear upconversion of infra-red excitation within nanometric volumes. However, manipulation of upconversion emission is restricted to varying percentages of component materials, nanocrystal structure, and optical pumping conditions. Here, we report temporal modulation of anti-Stokes luminescence by coupling upconversion nanoparticles with an electrochemically responsive molecule. By electrically tailoring orbital energy levels of the molecules anchored on nanoparticle surfaces, we demonstrate reversible control of molecular absorption, resulting in dynamic colour editing of anti-Stokes luminescence at single-particle resolution. Moreover, we show that a programmable logic gate array based on opto-electrochemical modulation can be constructed to convert information-encrypted electrical signals into visible patterns with millisecond photonic readout. These findings offer insights into precise control of anti-Stokes luminescence, while enabling a host of applications from low-threshold infrared logic switches to multichannel, high-fidelity photonic circuits.

980 nm high power, high slope efficiency distributed feedback lasers with nonabsorbing mirrors

1998 ◽  
Vol 34 (17) ◽  
pp. 1663 ◽  
Author(s):  
R.M. Lammert ◽  
J.E. Ungar ◽  
S.W. Oh ◽  
H. Qi ◽  
J.S. Chen ◽  
...  
Keyword(s):  
High Power ◽  
Slope Efficiency ◽  
Distributed Feedback ◽  
Distributed Feedback Lasers ◽  
High Slope
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