- Joined
- Dec 3, 2009
- Messages
- 528
- Points
- 0
Wow! 
I gotta give that a try. I will post pics if i get it to work.
I gotta give that a try. I will post pics if i get it to work.LPF Donation via Stripe | LPF Donation - Other Methods
Links below open in new window
ArcticMyst Security by Avery
Optical Trapping - Real Laser Tractor Beams
- Thread starter LarryDFW
- Start date
aXit
0
- Joined
- Sep 15, 2009
- Messages
- 206
- Points
- 0
I got it working with a green.
150mw, focused to infinity, with mouse optical sensor lens right in front, gave me a nice focal point about 2mm away from the lens.
I couldn't get it to stay there for more than a few seconds though.
150mw, focused to infinity, with mouse optical sensor lens right in front, gave me a nice focal point about 2mm away from the lens.
I couldn't get it to stay there for more than a few seconds though.
aXit
0
- Joined
- Sep 15, 2009
- Messages
- 206
- Points
- 0
Things, how big is that laser head? The beam seems to be quite large at the aperture.
It's one of these modules from here.
Not sure if that pic was taken when I had a LOC built into the module, but I bought like 4 or 5 of these a while back to play around with:
DealExtreme: $26.87 Genuine New Wish 5V Red Stage Laser Module (100mW)
They were originally $16, I guess I got in at the right time
Not sure if that pic was taken when I had a LOC built into the module, but I bought like 4 or 5 of these a while back to play around with:
DealExtreme: $26.87 Genuine New Wish 5V Red Stage Laser Module (100mW)
They were originally $16, I guess I got in at the right time
Asherz
0
- Joined
- Jan 18, 2009
- Messages
- 1,623
- Points
- 0
So this is how lightsabers work
If this could be some how incorporated into a lense it would be awesom
If this could be some how incorporated into a lense it would be awesom
- Joined
- Sep 4, 2008
- Messages
- 1,807
- Points
- 0
Here's the other thread: http://laserpointerforums.com/f50/my-laser-makes-red-lit-dot-thin-air-36182.html
Nice videos. It's weird how they combine into one dot, I've never seen that before.
Nice videos. It's weird how they combine into one dot, I've never seen that before.
jamilm9
0
- Joined
- Jan 12, 2008
- Messages
- 1,864
- Points
- 0
this is so cool i can only get mine to last for 2 seconds
- Joined
- Jan 7, 2007
- Messages
- 6,309
- Points
- 83
I too was able to get a spot for a couple seconds -- BUT ---
Things -- You have that tornado tube project. Plug it up and set it for this. The tube can provide a small, stable condition for this with the fans off.
HMike
Things -- You have that tornado tube project. Plug it up and set it for this. The tube can provide a small, stable condition for this with the fans off.
HMike
LarryDFW
0
- Joined
- Dec 6, 2008
- Messages
- 1,581
- Points
- 63
Several variables determine how long the optical trap will last:
1. Sharpness of the focal point -
Ideal particle stability is a wide beam focused to a point
Collimated to a thin fine beam will allow several traps along the beam (like my photo).
2. Air Movement can overcome the trapping force.
LarryDFW
1. Sharpness of the focal point -
Ideal particle stability is a wide beam focused to a point
Collimated to a thin fine beam will allow several traps along the beam (like my photo).
2. Air Movement can overcome the trapping force.
LarryDFW
Last edited:
- Joined
- Jan 2, 2009
- Messages
- 11,800
- Points
- 0
Looks like they are using the same principal for optical tweezers.
- Joined
- Dec 3, 2009
- Messages
- 528
- Points
- 0
Very nice TJ! I've tried to trap with my dilda, but I can't get a steady hold. Just a brief second, then it's gone
Nordhavn
0
- Joined
- Oct 12, 2007
- Messages
- 285
- Points
- 28
Anyone try this simulator here?
It lets you vary laser power and place the target outside of the beam waist.
PhET Optical Tweezers and Applications - Optical Tweezers, Optical, DNA, Laser
Neat stuff!
It lets you vary laser power and place the target outside of the beam waist.
PhET Optical Tweezers and Applications - Optical Tweezers, Optical, DNA, Laser
Neat stuff!
