Laser Focus World is an industry bedrock—first published in 1965 and still going strong. We publish original articles about cutting-edge advances in lasers, optics, photonics, sensors, and quantum technologies, as well as test and measurement, and the shift currently underway to usher in the photonic integrated circuits, optical interconnects, and copackaged electronics and photonics to deliver the speed and efficiency essential for data centers of the future.

Our 80,000 qualified print subscribers—and 130,000 12-month engaged online audience—trust us to dive in and provide original journalism you won’t find elsewhere covering key emerging areas such as laser-driven inertial confinement fusion, lasers in space, integrated photonics, chipscale lasers, LiDAR, metasurfaces, high-energy laser weaponry, photonic crystals, and quantum computing/sensors/communications. We cover the innovations driving these markets.

Laser Focus World is part of Endeavor Business Media, a division of EndeavorB2B.

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Following the Photons: A Photonics Podcast dives deep into the fascinating world of photonics. Our weekly episodes feature interviews and discussions with industry and research experts, providing valuable perspectives on the issues, technologies, and trends shaping the photonics community.

Editorial Advisory Board

  • Professor Andrea M. Armani, University of Southern California
  • Ruti Ben-Shlomi, Ph.D., LightSolver
  • James Butler, Ph.D., Hamamatsu
  • Natalie Fardian-Melamed, Ph.D., Columbia University
  • Justin Sigley, Ph.D., AmeriCOM
  • Professor Birgit Stiller, Max Planck Institute for the Science of Light, and Leibniz University of Hannover
  • Professor Stephen Sweeney, University of Glasgow
  • Mohan Wang, Ph.D., University of Oxford
  • Professor Xuchen Wang, Harbin Engineering University
  • Professor Stefan Witte, Delft University of Technology

Richardson Electronics, Ltd. - Common Stock (NQ:RELL)

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Historical Prices

Date Open High Low Close Volume Change (%)
Oct 09, 2025 12.30 13.58 11.58 11.86 849,388 +1.25(+11.78%)
Oct 08, 2025 9.960 10.70 9.640 10.61 677,274 +0.77(+7.83%)
Oct 07, 2025 9.700 9.840 9.440 9.840 58,700 +0.22(+2.29%)
Oct 06, 2025 9.730 9.780 9.570 9.620 22,529 +0.03(+0.31%)
Oct 03, 2025 9.610 9.840 9.490 9.590 26,036 +0.07(+0.74%)
Oct 02, 2025 9.630 9.697 9.490 9.520 30,573 -0.09(-0.94%)
Oct 01, 2025 9.670 9.850 9.530 9.610 28,130 -0.18(-1.84%)
Sep 30, 2025 9.660 9.845 9.570 9.790 25,719 +0.09(+0.93%)
Sep 29, 2025 10.00 10.00 9.670 9.700 31,297 -0.24(-2.41%)
Sep 26, 2025 9.644 10.10 9.644 9.940 24,715 +0.12(+1.22%)
Sep 25, 2025 9.910 10.03 9.750 9.820 22,404 -0.18(-1.80%)
Sep 24, 2025 10.44 10.44 9.990 10.00 14,127 -0.41(-3.94%)
Sep 23, 2025 10.43 10.52 10.19 10.41 45,522 +0.06(+0.58%)
Sep 22, 2025 10.02 10.41 9.930 10.35 29,922 +0.34(+3.40%)
Sep 19, 2025 10.34 10.44 10.00 10.01 64,384 -0.36(-3.47%)
Sep 18, 2025 10.03 10.43 9.960 10.37 34,244 +0.38(+3.80%)
Sep 17, 2025 10.24 10.37 9.920 9.990 21,769 -0.23(-2.25%)
Sep 16, 2025 9.940 10.26 9.878 10.22 32,257 +0.21(+2.10%)
Sep 15, 2025 9.820 10.04 9.820 10.01 16,284 +0.29(+2.98%)
Sep 12, 2025 9.889 9.889 9.710 9.720 11,469 -0.19(-1.92%)
Sep 11, 2025 9.670 9.950 9.602 9.910 22,331 +0.31(+3.23%)
Sep 10, 2025 9.500 9.760 9.490 9.600 41,364 +0.08(+0.84%)
Sep 09, 2025 9.610 9.726 9.480 9.520 16,637 -0.11(-1.14%)
Sep 08, 2025 9.800 9.800 9.600 9.630 49,841 -0.14(-1.43%)
Sep 05, 2025 9.800 9.905 9.685 9.770 20,196 -0.04(-0.41%)
Sep 04, 2025 9.600 9.890 9.480 9.810 14,728 +0.25(+2.62%)
Sep 03, 2025 9.500 9.665 9.440 9.560 28,890 +0.05(+0.53%)
Sep 02, 2025 9.700 9.910 9.510 9.510 19,462 -0.32(-3.26%)
Aug 29, 2025 10.04 10.10 9.790 9.830 45,799 -0.17(-1.70%)
Aug 28, 2025 9.990 10.02 9.810 10.00 31,199 +0.13(+1.32%)
Aug 27, 2025 9.900 9.951 9.773 9.870 32,828 -0.03(-0.30%)
Aug 26, 2025 9.530 10.03 9.500 9.900 59,454 +0.47(+4.98%)
Aug 25, 2025 9.910 9.910 9.430 9.430 43,760 -0.60(-5.98%)
Aug 22, 2025 9.690 10.11 9.652 10.03 192,510 +0.43(+4.48%)
Aug 21, 2025 9.620 9.750 9.600 9.600 18,666 -0.13(-1.34%)
Aug 20, 2025 9.610 9.970 9.504 9.730 69,543 +0.15(+1.57%)
Aug 19, 2025 9.730 9.770 9.570 9.580 28,720 -0.10(-1.03%)
Aug 18, 2025 9.400 9.778 9.400 9.680 46,458 +0.19(+2.00%)
Aug 15, 2025 9.910 10.05 9.480 9.490 18,066 -0.36(-3.61%)
Aug 14, 2025 9.805 9.930 9.680 9.845 20,340 -0.17(-1.75%)
Aug 13, 2025 9.970 10.06 9.830 10.02 19,313 +0.02(+0.20%)
Aug 12, 2025 9.760 10.21 9.760 10.00 51,285 +0.38(+3.95%)
Aug 11, 2025 9.580 10.08 9.480 9.620 21,624 +0.03(+0.31%)
Aug 08, 2025 9.700 9.850 9.580 9.590 12,368 +0.03(+0.31%)
Aug 07, 2025 9.977 9.978 9.530 9.560 19,302 -0.12(-1.23%)
Aug 06, 2025 9.689 9.908 9.560 9.679 32,472 +0.01(+0.10%)
Aug 05, 2025 9.679 9.928 9.560 9.669 26,472 -0.03(-0.31%)
Aug 04, 2025 9.610 9.794 9.525 9.699 33,045 +0.10(+1.04%)
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