Which type of laser is best for nanotechnlogy?

[Radium]

Hi:

What lasing medium and "pump" source is most practical for lasers whose
applications are in nanotechnology? My guess is diode lasers because
they are the small compared to most other lasers. Am I right?


Thanks,

Radium

 

[Sam Goldwasser]

What lasing medium and "pump" source is most practical for lasers whose
applications are in nanotechnology? My guess is diode lasers because
they are the small compared to most other lasers. Am I right?

Lasers to go into nano systems or lasers to be used for making nano systems?

The smallest self-contained lasers are probably diode lasers.

However, the nano people are producing nano scale lasers with nano materials.
Is that enough "nanos" for you?

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[Radium]

Lasers to go into nano systems or lasers to be used for making nano systems?
Both

The smallest self-contained lasers are probably diode lasers.

However, the nano people are producing nano scale lasers with nano materials.

Just what are these "nano materials"? Are they *extremely* small
diodes?

 

[Sam Goldwasser]

Just what are these "nano materials"? Are they *extremely* small
diodes?

I don't believe so, nanoscale whiskers of various materials.

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[Radium]

I don't believe so, nanoscale whiskers of various materials.

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Where can I find more info on nano-scale lasers? Are nano-scale lasers
the smallest possible?

 

[Pooh Bear]

Where can I find more info on nano-scale lasers? Are nano-scale lasers
the smallest possible?

http://www.google.com/search?client=opera&rls=en&q=nano-scale+laser&sourceid=opera&ie=utf-8&oe=utf-8

Expect pico scale technology in due course.

Graham

 

[Stijn Foerier]

I think they make nano-lasers out of photonic bandgap materials. But I don't
know the details.

 

[Sam Goldwasser]

Where can I find more info on nano-scale lasers? Are nano-scale lasers
the smallest possible?

There are single atom lasers. It might be hard to go smaller than those.

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[Radium]

There are single atom lasers. It might be hard to go smaller than those.

I wonder what the single-atom laser could be used for. Maybe photonic
communication at the molecular level.

 

[Lostgallifreyan]

http://www.google.com/search?client=opera&rls=en&q=nano-scale+laser&sou
rceid=opera&ie=utf-8&oe=utf-8

Expect pico scale technology in due course.

Graham

At what wavelengths, exactly?

This is going strangely, it makes me wonder if there could even be a laser
emission from parts that are smaller than that wavelength. I guess some
kind of emission might be possible, just as long radio waves can come from
short aerials, but I can't imagine what could make lasers work that way.
Surely only by synching parallel emitters, and that would be cheating.

 

[Lostgallifreyan]

There are single atom lasers. It might be hard to go smaller than
those.

Really? How do you get stimulated emission from a region smaller than that
wavelength? Or don't you?

 

[Tim Williams]

This is going strangely, it makes me wonder if there could even be a laser
emission from parts that are smaller than that wavelength.

Well, excited neon atoms are pretty small. 650nm is at least a few thousand
atoms across (depending on how you define the radius of a neon atom).

Tim

 

[Tim Williams]

Expect pico scale technology in due course.

It's been around for quite some time. It's called chemistry. :^)

Tim

 

[Lostgallifreyan]

Well, excited neon atoms are pretty small. 650nm is at least a few
thousand atoms across (depending on how you define the radius of a
neon atom).

Tim

Yes, but to stimulate more, you must have OTHER neon atoms.
So re-read my question as "can you get a HeNe cavity shorter than 632 nm?"
I suspect the answer might be "No".

 

[Sam Goldwasser]

I wonder what the single-atom laser could be used for. Maybe photonic
communication at the molecular level.

Not much at the present time, and it probably requires several optical
tables of equipment to implement it.....

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[Sam Goldwasser]

Really? How do you get stimulated emission from a region smaller than that
wavelength? Or don't you?

http://physicsweb.org/articles/news/7/9/10

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[[email protected]]

I wonder what the single-atom laser could be used for. Maybe photonic
communication at the molecular level.

Molecules don't usually have much of anything interesting to say...

<snip remainder>

 

[Radium]

Molecules don't usually have much of anything interesting to say...

What about protein molecules? Proteins are the essence of life. Perhaps
a digital brain device could be designed based on photonanotechnology.
Certain proteins present in the brain could have one-atom lasers
planted around them thereby allowing for communication between the
brain and a photonic computer.

 

[[email protected]]

What about protein molecules? Proteins are the essence of life. Perhaps
a digital brain device could be designed based on photonanotechnology.
Certain proteins present in the brain could have one-atom lasers
planted around them thereby allowing for communication between the
brain and a photonic computer.

Mumbo-jumbo, psuedo-science babbling word salad that sounds like
dialog from a sci-fi TV show canceled after two episodes.

And FYI, hot pizza and cold beer is the essence of life though from
your posts I highly doubt you are old enough for beer.

 

[Pooh Bear]

What about protein molecules?

Have you trued talking to one ?

Proteins are the essence of life. Perhaps
a digital brain device could be designed based on photonanotechnology.
Certain proteins present in the brain could have one-atom lasers
planted around them thereby allowing for communication between the
brain and a photonic computer.

You're on a roll here !

Graham