Re: Death Ray Analysis

I don't know. One of my customers is using a 200 watt fiber-coupled CW laser as the light source for a particle illuminator/detector thing. "Cost is no object" they said; I like to know that about customers.

You can buy a 1000 watt CW laser that outputs on 50u single-mode fiber. That's, like, 500 GW/sq meter if I did that math right.

--

John Larkin                  Highland Technology Inc
www.highlandtechnology.com   jlarkin at highlandtechnology dot com   

Precision electronic instrumentation
Picosecond-resolution Digital Delay and Pulse generators
Custom timing and laser controllers
Photonics and fiberoptic TTL data links
VME  analog, thermocouple, LVDT, synchro, tachometer
Multichannel arbitrary waveform generators
Reply to
John Larkin
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Why do some people make uninformed blanket statements like this?

There are MANY documented examples of resonant biological effects attributable to modulation frequency. You need look no further than current research on the effects of GSM signals.

Or ELF-modulated carriers and brainwave modification, microwave related cancer research, etc.

It's just resonance, or selective stimulation/suppression of electro-chemical processes. Well known.

If you are too busy to do the reading, wait a few years until it's on TV ... or pointed at you.

Fred

Reply to
Fred Leighton

ied

so

Most of the $ goes to "Atomic Vapor Laser Isotope Separation", "Molecular Laser Isotope Separation", and "Separation of Isotopes by Laser Interaction".

"Global Laser Enrichment" has gone commercial in fact. In high-tech Wilmington NC.

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Tim.

Reply to
Tim Shoppa

There's something about a medical education that tends to inhibit critical thinking. Most - probably all - of the "research" on the potential dangers of GSM radiation is rubbish, like the earlier research on the damaging effects of diagnostic sonar, done by alarmist medically trained clown who wanted to get their names in the paper.

Repeatedly imagined.

TV is an aspect of "science journalism" and in English-speaking countries, science journalists aren't trained in science. There are some laser-based weapons around, but they aren't based on subtle effects - you can leave your tin-foil hat at home for the moment.

-- Bill Sloman, Nijmegen

Reply to
Bill Sloman

Nice to hear you understand everything about quantum physics and particle beam weapons. You seem to be in good company here on this newsgroup.

Deep IR is adjacent to microwave frequencies. The Russians demonstrated an IR beam weapon decades ago. Most of the current work with tactical lasers occurs in the same band.

Tin foil wouldn't help most people anyway. The "free" pres is already doing all their thinking for them.

Fred

Reply to
Fred Leighton

Happily, there's not a lot to understand.

Down around the ever-so-important transition between molecular rotations and molecular bending, both of which generate IR absorption lines that are thoroughly smeared out by molecular collisions in real- world situations, making it rather difficult to do anything subtle

As if thinking came into it.

-- Bill Sloman, Nijmegen

Reply to
Bill Sloman

"All" the research. "Probably". Please. Look at the work done by reputable institutions, not telecom pimps.

You also have a problem with the medical profession?? Not much left to believe in is there?

Good thing we have you as the final authority.

Just read the emerging peer reviewed literature. Draft rebuttals and go for broke. You could be the next Amazing Randy.

Fred

Reply to
Fred Leighton

I don't know the abs max, but in practice it mostly depends on the jacket material and the condition of the facets. Minor launch errors cause light to get into the cladding, which can roast the jacket and destroy the fibre that way.

Air breakdown at the facet surface is another issue, so tapering the fibre can help a lot.

Cheers

Phil Hobbs

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics

160 North State Road #203
Briarcliff Manor NY 10510
845-480-2058

hobbs at electrooptical dot net
http://electrooptical.net
Reply to
Phil Hobbs

And your example is?

The medical profession is fine, except when they try to do scientific research. There are exceptions - I know at least one medically qualified researcher who does do critical thinking. His wife was the statistician in charge of his local cancer statistics register, and he's not an typical representative of the profession.

You don't do critical thinking yourself, do you ...

I concentrate on duff electronics in Rev. Sci. Instrum. It doesn't generate a lot of publicity.

-- Bill Sloman, Nijmegen

Reply to
Bill Sloman

He likes 555 family ICs a lot too.

He says they are obsolete.

Reply to
Chieftain of the Carpet Crawlers

Hey, SLOman. It's a great chip!

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Reply to
Chieftain of the Carpet Crawlers

Wildly popular with people who haven't thought about what they are doing since about 1980. The 555 is a legacy part, still being designed in by legacy designers who don't know any better, like AlwaysWrong.

-- Bill Sloman, Nijmegen

Reply to
Bill Sloman

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