Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers

LPF Donation via Stripe | LPF Donation - Other Methods

Links below open in new window

ArcticMyst Security by Avery

Probably a stupid question?

M

mike666

0
Joined
Nov 7, 2008
Messages
102
Points
0
I'm a noobie at all this so forgive me if this is a really stupid question.

As most people know, if you have a light in a dark room and you turn it on it will light the room up ::).
If you had two lights in the room and turned the second one on, the room would be twice as bright :cool:.

If you could make the beams from two lasers point along the same axis, would the resulting beam be brighter and have a higher mW output?

So, for instance, if you used mirrors to make the beams from two 5mW lasers travel in the same direction, would the resulting beam be brighter and have a power of about 10mW?
 





Cyparagon

Cyparagon

0
Joined
Sep 12, 2007
Messages
9,399
Points
113
mike666 said:
If you had two lights in the room and turned the second one on, the room would be twice as bright  :cool:.
Click to expand...
~1.5 times as bright, actually.

Yes. The power would double, but the apparent brightness would increase by approximately 50%.
 
L

Liberty1992

0
Joined
Oct 12, 2008
Messages
323
Points
0
yea it would increase in power, but what are you trying to do increase the power or increase the brightness of the dot?
 
M

mike666

0
Joined
Nov 7, 2008
Messages
102
Points
0
Liberty1992 said:
yea it would increase in power, but what are you trying to do increase the power or increase the brightness of the dot?
Click to expand...


I'm not trying to achieve anything, it was just a thought I had.

So if you had, say, four 500mW lasers all alined along the same axis, then you would have a combined 2W laser beam or therabouts? Is that right?
 
E

ElektroFreak

0
Joined
Nov 7, 2008
Messages
5,725
Points
0
That is correct. You'd need beam-combining optics (which are relatively easily obtained) to combine all the beams, but it definitely works. this is the theory behind combining red, green, and blue laser beams to make an RGB full-color system, except that in your case all the beams would be the same color, and the result would be higher output.
 
L

Liberty1992

0
Joined
Oct 12, 2008
Messages
323
Points
0
mike666 said:
[quote author=Liberty1992 link=1226316653/0#2 date=1226332749]yea it would increase in power, but what are you trying to do increase the power or increase the brightness of the dot?
Click to expand...


I'm not trying to achieve anything, it was just a thought I had.

So if you had, say, four 500mW lasers all aligned along the same axis, then you would have a combined 2W laser beam or thereabouts? Is that right?[/quote]
yea that's right, why you would actually do that idk, but it would work
 
Switch

Switch

0
Joined
Dec 9, 2007
Messages
3,327
Points
0
ElektroFreak said:
That is correct. You'd need beam-combining optics (which are relatively easily obtained) to combine all the beams, but it definitely works. this is the theory behind combining red, green, and blue laser beams to make an RGB full-color system, except that in your case all the beams would be the same color, and the result would be higher output.
Click to expand...
How would you go combining four green beams with easily obtained optics? :-/
 
You must log in or register to reply here.




Top