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 JAMP  Vol.6 No.11 , November 2018
Low-Spatial Coherence High-Power Electrically Injected 6xx nm Dual-Emitter Laser
Yufei Jia1,2,3, Linhai Xu1,2,3, Yuzhe Lin1,2,3, Yufei Wang1,2, Aiyi Qi1,2, Wanhua Zheng1,2,3,4*
Abstract:
Laser-based displays have attracted much attention owing to large-size screen and full-color gamut compared with other displays such as liquid crystal display and light emitting diode. However, there exists a phenomenon, speckle, limits the applications of laser display because of the high coherence of laser. In this work, we developed an electrically injected 6xx nm dual-emitter laser which combines the low-spatial coherence with the high-power. The output power of the dual-emitter laser exceeds 500 mW under 20?C pulse operation. The single emitter consists of D-shaped section used to obtain more independent spatial modes thus reduces coherence and a stripe area to obtain the high power. The radius of the D-shaped cavity is 500 μm and the length of stripe is 1000 μm. We used the standard photolithography and inductively coupled plasma (ICP) process to fabricate the device. The speckle contrast was measured to be 5%. It exhibits a great potential of reducing speckle from the source directly for laser display.
Cite this paper: Jia, Y. , Xu, L. , Lin, Y. , Wang, Y. , Qi, A. , Zheng, W. , (2018) Low-Spatial Coherence High-Power Electrically Injected 6xx nm Dual-Emitter Laser. Journal of Applied Mathematics and Physics, 6, 2338-2342. doi: 10.4236/jamp.2018.611195.
References

[1]   Jean-Michel (2007) Laser Displays: Life-Like Displays. http://sites.ieee.org/scv-ces/files/2015/06/IEEE_May_22__2007.pdf

[2]   Benjamin, D. and Satoshi, K. (1993) Speck-le-Free Image in a laser-Diode Microscope by Using the Optical Feedback Effect. Optics Letters, 18, 549-551. https://doi.org/10.1364/OL.18.000549

[3]   Jahia, I.T. (2002) Speckle Contrast Reduction in Laser Projection Displays. Proc. SPIE, 4657, 131-137. https://doi.org/10.1117/12.463781

[4]   Lowenthal, S. and Joyeux, D. (1971) Speckle Re-moval by a Slowly Moving Diffuser Associated with Amotionless Diffuser. J. Opt. Soc. Am., 61, 847-851. https://doi.org/10.1364/JOSA.61.000847

[5]   Goodman, J.W. (2006) Speckle Phenomena in Optics: Theory and Applica-tions. Version 8.0, Roberts & Company, Englewood.

[6]   Redding, B., Choma, M.A. and Cao, H. (2011) Spatial Coherence of Random Laser Emission. Opt. Lett., 36, 3404-3406. https://doi.org/10.1364/OL.36.003404

[7]   Nixon, M., Redding, B., Friesem, A., Cao, H. and Davidson, N. (2013) Efficient Method for Controlling the Spatial Coherence of a Laser. Opt. Lett., 38, 3858-3861. https://doi.org/10.1364/OL.38.003858

[8]   Yu, S.F. (2015) Electrically Pumped Random Lasers. J. Phys. D, 48, 483001. https://doi.org/10.1088/0022-3727/48/48/483001

[9]   Guo, X.J., Wang, Y.F., Jia, Y.F. and Zheng, W.H. (2017) Electri-cally-Driven Spectrally-Broadened Random Lasing Based on Disordered Photonic Crystal Structures. Applied Physics Let-ters, 111, Article ID: 031113. https://doi.org/10.1063/1.4994325

[10]   Jia, Y.F., Wang, Y.F., Xu, L.H. and Zheng, W.H. (2018) Low-Spatial Coherence Electrically Pumped Red-Emitting Semiconductor Laser. Proc. SPIE, Beijing, 11-13 October 2018, 10812-10834 (Unpublished).

[11]   Redding, B., Cerjan, A., Huang, X., Stone, A.D. and Cao, H. (2015) Low-Spatial Coherence Electrically Pumped Semiconductor Laser for Speckle-Free Full-Field Imaging. PNAS, 112, 1304-1309. https://doi.org/10.1073/pnas.1419672112

[12]   Stijn, R., Youri, M., Gordon, C., Guy, V., Peter, J. and Hugo, T. (2012) Standarized Speckle Measurement Method Matched to Human Speckle Perception in Laser Projection Systems. Optics Ex-press, 20, 8770-8783. https://doi.org/10.1364/OE.20.008770

 
 
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