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

Sonoma Pharmaceuticals, Inc. - Common Stock (NQ:SNOA)

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Historical Prices

Date Open High Low Close Volume Change (%)
Sep 30, 2025 3.820 3.930 3.820 3.880 13,457 -0.06(-1.52%)
Sep 29, 2025 4.020 4.060 3.870 3.940 33,984 -0.10(-2.48%)
Sep 26, 2025 4.020 4.150 3.970 4.040 13,917 -0.02(-0.49%)
Sep 25, 2025 4.080 4.080 3.990 4.060 15,769 -0.02(-0.49%)
Sep 24, 2025 4.050 4.110 4.039 4.080 18,777 +0.04(+0.99%)
Sep 23, 2025 4.160 4.230 4.000 4.040 35,971 -0.13(-3.12%)
Sep 22, 2025 4.110 4.200 3.960 4.170 41,499 -0.01(-0.24%)
Sep 19, 2025 4.280 4.324 4.130 4.180 25,306 -0.08(-1.88%)
Sep 18, 2025 4.230 4.354 4.160 4.260 46,679 +0.18(+4.41%)
Sep 17, 2025 4.080 4.200 4.080 4.080 21,101 -0.12(-2.86%)
Sep 16, 2025 3.810 4.276 3.802 4.200 100,470 -0.23(-5.19%)
Sep 15, 2025 4.500 4.500 4.400 4.430 28,371 -0.04(-0.89%)
Sep 12, 2025 4.520 4.580 4.411 4.470 31,568 -0.08(-1.76%)
Sep 11, 2025 4.590 4.590 4.510 4.550 54,800 -0.13(-2.78%)
Sep 10, 2025 4.500 4.680 4.349 4.680 76,820 +0.32(+7.34%)
Sep 09, 2025 4.480 4.540 4.310 4.360 25,042 -0.21(-4.60%)
Sep 08, 2025 4.690 4.700 4.530 4.570 33,971 -0.16(-3.38%)
Sep 05, 2025 4.510 4.740 4.500 4.730 59,833 +0.20(+4.42%)
Sep 04, 2025 4.510 4.600 4.450 4.530 59,528 -0.08(-1.74%)
Sep 03, 2025 4.610 4.770 4.586 4.610 55,594 -0.10(-2.12%)
Sep 02, 2025 4.460 4.730 4.450 4.710 67,443 +0.26(+5.84%)
Aug 29, 2025 4.540 4.600 4.390 4.450 40,746 -0.11(-2.41%)
Aug 28, 2025 4.550 4.660 4.520 4.560 39,761 -0.01(-0.22%)
Aug 27, 2025 4.790 4.820 4.540 4.570 72,574 -0.25(-5.19%)
Aug 26, 2025 4.780 4.871 4.698 4.820 99,488 -0.01(-0.21%)
Aug 25, 2025 4.950 5.040 4.815 4.830 81,490 -0.26(-5.11%)
Aug 22, 2025 5.060 5.180 4.750 5.090 157,674 +0.03(+0.59%)
Aug 21, 2025 4.920 5.320 4.831 5.060 260,136 -0.03(-0.59%)
Aug 20, 2025 5.310 5.355 5.060 5.090 158,940 -0.14(-2.68%)
Aug 19, 2025 4.930 5.450 4.930 5.230 201,337 -0.12(-2.24%)
Aug 18, 2025 4.940 5.600 4.922 5.350 600,223 +0.00(+0.00%)
Aug 15, 2025 4.740 5.350 4.612 5.350 1,380,854 +0.08(+1.52%)
Aug 14, 2025 5.630 6.920 4.830 5.270 69,847,488 +2.22(+72.67%)
Aug 13, 2025 3.000 3.135 2.950 3.052 4,654,876 +0.05(+1.73%)
Aug 12, 2025 2.940 3.020 2.910 3.000 13,460 +0.02(+0.67%)
Aug 11, 2025 3.110 3.150 2.949 2.980 26,413 -0.08(-2.61%)
Aug 08, 2025 3.120 3.162 2.880 3.060 20,023 -0.05(-1.61%)
Aug 07, 2025 3.030 3.120 2.920 3.110 34,577 +0.09(+2.98%)
Aug 06, 2025 3.010 3.050 2.900 3.020 27,253 +0.01(+0.33%)
Aug 05, 2025 3.040 3.190 3.001 3.010 52,619 -0.08(-2.43%)
Aug 04, 2025 3.010 3.150 2.970 3.085 46,967 +0.09(+3.18%)
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