Monochromatic, coherent light source for optical experiments, e.g. on diffraction, interference, and hologram reconstitution. Anodised metal housing with key switch, neutral filter for attenuating beam, 2 stand rods and power supply unit. To widen the beam, microscope objectives (e.g. W30614) can be screwed to the beam aperture.
![Helium-Neon Laser, 1003165 [U21840], Optical Lamps on Stem](/imagelibrary/U21840/U21840_01_Helium-Neon-Laser.jpg)
![Helium-Neon Laser, 1003165 [U21840], Optical Lamps on Stem](/imagelibrary/U21840/U21840_02_Helium-Neon-Laser.jpg)
![Helium-Neon Laser, 1003165 [U21840], Optical Lamps on Stem (Small)](/thumblibrary/U21840/U21840_01_50_50_Helium-Neon-Laser.jpg)
![Helium-Neon Laser, 1003165 [U21840], Optical Lamps on Stem (Small)](/thumblibrary/U21840/U21840_02_50_50_Helium-Neon-Laser.jpg)
![Interferometer, 1002651 [U10350], Interferometer](/thumblibrary/U10350/U10350_01_140_140_Interferometer.jpg)
![Barrel Foot, 1 kg, 1002834 [U13265], Bases](/thumblibrary/U13265/U13265_01_140_140_Barrel-Foot-1-kg.jpg)
![Experiment: Mach-Zehnder interferometer, 8000685 [UE4030520], Wave optics](/thumblibrary/UE4030520/UE4030520_01_140_140_Experiment-Mach-Zehnder-interferometer.jpg)
![Experiment: Michelson's Interferometer II, 8000787 [UE4030411], Wave optics](/thumblibrary/UE4030411/UE4030411_01_140_140_Experiment-Michelsons-Interferometer-II.jpg)
![Experiment: Fresnel Biprism, 8000681 [UE4030300], Wave optics](/thumblibrary/UE4030300/UE4030300_01_140_140_Experiment-Fresnel-Biprism.jpg)
![Experiment: Michelson-Interferometer, 8000684 [UE4030410], Wave optics](/thumblibrary/UE4030410/UE4030410_01_140_140_Experiment-Michelson-Interferometer.jpg)
![Experiment: Pockels Effect (230 V, 50/60 Hz), 8000770 [UE4040500-230], Polarisation](/thumblibrary/UE4040500-230/UE4040500-230_01_140_140_Experiment-Pockels-Effect-230-V-5060-Hz.jpg)
![Experiment: Pockels Effect (115 V, 50/60 Hz), 8000769 [UE4040500-115], Polarisation](/thumblibrary/UE4040500-115/UE4040500-115_01_140_140_Experiment-Pockels-Effect-115-V-5060-Hz.jpg)
![Set of 15 Safety Experiment Leads, 75 cm, 1002843 [U138021], Circuits](/thumblibrary/U138021/U138021_01_140_140_Set-of-15-Safety-Experiment-Leads-75-cm.jpg)
![Tubing, Silicone 6 mm, 1002622 [U10146], Hose, Flow hose](/thumblibrary/U10146/U10146_01_140_140_Tubing-Silicone-6-mm.jpg)
![Accessory Set for the Interferometer, 1002652 [U10351], Interferometer](/thumblibrary/U10351/U10351_01_140_140_Accessory-Set-for-the-Interferometer.jpg)
![DC Power Supply 20 V, 5 A (230 V, 50/60 Hz), 1003312 [U33020-230], Power Supplies](/thumblibrary/U33020-230/U33020-230_01_140_140_DC-Power-Supply-20-V-5-A-230-V-5060-Hz.jpg)
![Pair of Safety Experiment Leads, 75 cm, blue, red, 1017718 [U13816], Experiment Leads and Cables](/thumblibrary/U13816/U13816_01_140_140_Pair-of-Safety-Experiment-Leads-75-cm-blue-red.jpg)
![Universal Clamp, 1002830 [U13255], Clamps](/thumblibrary/U13255/U13255_01_140_140_Universal-Clamp.jpg)
![High-Quality Vacuum Hand Pump, 1012856 [U205001], Vacuum Pumps](/thumblibrary/U205001/U205001_01_140_140_High-Quality-Vacuum-Hand-Pump.jpg)
![Set of 15 Experiment Leads, 75 cm 1 mm², 1002840 [U13800], Circuits](/thumblibrary/U13800/U13800_01_140_140_Set-of-15-Experiment-Leads-75-cm-1-mm.jpg)
![Analogue Multimeter ESCOLA 100, 1013527 [U8557380], Hand-held Analog Measuring Instruments](/thumblibrary/U8557380/U8557380_01_140_140_Analogue-Multimeter-ESCOLA-100.jpg)
![Function Generator FG 100 (230 V, 50/60 Hz), 1009957 [U8533600-230], Function Generators](/thumblibrary/U8533600-230/U8533600-230_01_140_140_Function-Generator-FG-100-230-V-5060-Hz.jpg)
![Digital Multimeter P3340, 1002785 [U118091], Hand-held Digital Measuring Instruments](/thumblibrary/U118091/U118091_01_140_140_Digital-Multimeter-P3340.jpg)
![Digital Counter (230 V, 50/60 Hz), 1001033 [U8533341-230], Measurement of Time](/thumblibrary/U8533341-230/U8533341-230_01_140_140_Digital-Counter-230-V-5060-Hz.jpg)
![Pocket Measuring Tape, 2 m, 1002603 [U10073], Accessory - Measurement of Length](/thumblibrary/U10073/U10073_01_140_140_Pocket-Measuring-Tape-2-m.jpg)
![HF Patch Cord, BNC/4 mm Plug, 1002748 [U11257], Experiment Leads and Cables](/thumblibrary/U11257/U11257_01_140_140_HF-Patch-Cord-BNC4-mm-Plug.jpg)
![Tripod Stand 150 mm, 1002835 [U13270], Bases](/thumblibrary/U13270/U13270_01_140_140_Tripod-Stand-150-mm.jpg)
![HF Patch Cord, 1m, 1002746 [U11255], Experiment Leads and Cables](/thumblibrary/U11255/U11255_01_140_140_HF-Patch-Cord-1m.jpg)
![Optical rider D , 90/50, 1002635 [U103111], Optics with an Optical Bench](/thumblibrary/U103111/U103111_01_140_140_Optical-rider-D-9050.jpg)
![Tube Holder S -
for the experimental setup of tubes of series S, 1014525 [U185002], Electron Tubes S](/thumblibrary/U185002/U185002_01_140_140_Tube-Holder-S-for-the-experimental-setup-of-tubes-of-series-S.jpg)