This Helium Neon Laser has two advantages over the other lasers:
1) 1.5 mW: The extra power makes laser experiments and demonstrations brighter (and often easier). It’s especially useful for holography. A shorter exposure time can be used to minimize problems with vibrations.
2) Modulation: Connect a microphone to this laser, and students can transmit voice through the laser beam to a distant receiver. Or use this laser as a laser stroboscope for timing.
Note: Additional equipment, not available from PASCO, is required for laser communication experiments.
|Beam Diameter||0.49 mm|
|Beam Divergence||1.65 mRad|
|Housing Size||32.8 x 7.2 x 7.4 cm|
|Modulation Range||85-100% of full power|
|Input Signal Frequency||50 Hz-600 kHz (±3 dB); miniature phone jack accepts audio input signals at 100 mV peak-to-peak and 60 kΩ impedance.|
|Transmission Range||Effective up to several hundred feet; with a good collimator and detector, transmissions up to several thousand feet are possible.|
|Power||115 VAC, 60 Hz (not available in 220 V)|