Um...Me123 Posted September 25, 2005 Report Share Posted September 25, 2005 Is a laser diode work similar to a LED? It will just send out a straight laser beam right? Is there any way to make a laser beam show up in the air (a physical line--not just a dot on a surface) without using fog or some spray (like CSI)?Ii am asking this because I noticed laser diodes on ebay that were fairly cheap and they will little gold colored canisters (smaller than a quarter) and had 2 straight pin leads. They do the same thing as a handheld laser pointer?ThanksP.S. They have laser beam recievers dont they? Just like infared recievers? Quote Link to comment Share on other sites More sharing options...
audioguru Posted September 25, 2005 Report Share Posted September 25, 2005 A hologram is the result of a laser beam and its reflected interference pattern of an object and shows up in mid air.A visible laser beam is light, so can be detected with a light detector: photodiode, phototransistor or light-dependent-resistor. Quote Link to comment Share on other sites More sharing options...
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