Tunable distributed feedback lasing with low threshold and high slope efficiency from electroluminescent conjugated polymer waveguide

In this study, high-order distributed-feedback (DFB) polymer lasers were comparatively investigated. Their performance relies on multiple lasing directions and their advantages include their high manufacturing tolerances due to the large grating periods. Nine laser cavities were fabricated by spin-coating the gain polymer films onto a grating structure, which was manufactured via interference lithography that operated at the 2nd, 3rd, and 4th DFB orders. Low threshold lasing and high slope efficiency were achieved in high-order DFB polymer lasers due to the large grating groove depth and the large gain layer thickness. A high-order DFB configuration shows possible advantages, including the ability to control the lasing direction and to achieve multiple-wavelength lasers. Furthermore, our investigation demonstrates that the increase in threshold and decrease in slope efficiency with an increase in the feedback order can be limited by controlling the structural parameters.

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High slope efficiency and low threshold in a laser-diode-pumped passively Q-switched ion-implanted Nd:YVO4 planar waveguide laser with GaAs saturable absorber

Laser Physics ◽

10.1134/s1054660x1119008x ◽

2011 ◽

Vol 21 (11) ◽

pp. 1880-1883 ◽

Cited By ~ 4

Author(s):

G. L. Du ◽

G. Q. Li ◽

S. Z. Zhao ◽

T. Li ◽

K. J. Yang ◽

...

Keyword(s):

Saturable Absorber ◽

Laser Diode ◽

Slope Efficiency ◽

Planar Waveguide ◽

Waveguide Laser ◽

High Slope ◽

Diode Pumped ◽

Low Threshold ◽

Ion Implanted

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Low-Threshold Conjugated Polymer Distributed Feedback Lasers on InP Substrate

Chinese Physics Letters ◽

10.1088/0256-307x/25/5/046 ◽

2008 ◽

Vol 25 (5) ◽

pp. 1690-1692 ◽

Cited By ~ 5

Author(s):

Zhang Su-Mei ◽

Zhang Ding-Ke ◽

Ma Dong-Ge

Keyword(s):

Conjugated Polymer ◽

Distributed Feedback ◽

Distributed Feedback Lasers ◽

Inp Substrate ◽

Low Threshold

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

MRS Proceedings ◽

10.1557/proc-329-179 ◽

1993 ◽

Vol 329 ◽

Cited By ~ 4

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.

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