Laser pointer discussion. Read/write reviews of laser pointers and laser pointer companies. Learn about all types of laser pointers and lasers





Welcome to Laser Pointer Forums! If you are looking for a laser pointer or want to compare different laser pointer companies, you may want to check out the LPF Laser Pointer Company Database. The link will open in a new window for your convenience.








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes
Laser Technology Laser Pointer Parts Lasers by Wavelength
Top 10 Laser Pointer Companies Laser Pointer Company Database Visible Beam Laser Pointers


One laser store meets all your needs

























Go Back   Laser Pointer Forums - Discuss Laser Pointers > Lasers > Science & Lasers



LPF List of Laser Pointer Companies (link opens new window)



Reply
 
LinkBack Thread Tools Display Modes
Old 03-05-2014, 08:19 PM #1
Class 2 Laser
 
Join Date: Mar 2013
Location: Berlin ; Germany
Posts: 315
Rep Power: 83
shokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond repute
shokkunlasers shokkunlasers is offline
Class 2 Laser
 
Join Date: Mar 2013
Location: Berlin ; Germany
Posts: 315
Rep Power: 83
shokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond repute
Default Ionizing metal vapors with lasers?

I would like to know whether you think it's possible to ionize metal vapors(or maybe even gases) in a Na vapor lamp for example with a low powered aka handheld laser.

I know you can't do that with gases but their ionization energy is more than twice as high as those you need for alkali metals.
Of course absorption is an important factor there.


If anyone tried this or got some scientific information please reply!


shokkunlasers is offline   Reply With Quote







LPF List of Laser Pointer Companies (link opens new window)







Old 03-05-2014, 10:54 PM #2
bloompyle's Avatar
Gas Guru
 
Join Date: Apr 2010
Location: Nebraska, US
Posts: 4,176
Rep Power: 2929
bloompyle has a reputation beyond reputebloompyle has a reputation beyond reputebloompyle has a reputation beyond reputebloompyle has a reputation beyond reputebloompyle has a reputation beyond reputebloompyle has a reputation beyond reputebloompyle has a reputation beyond reputebloompyle has a reputation beyond reputebloompyle has a reputation beyond reputebloompyle has a reputation beyond reputebloompyle has a reputation beyond repute
bloompyle bloompyle is online now
Gas Guru
bloompyle's Avatar
 
Join Date: Apr 2010
Location: Nebraska, US
Posts: 4,176
Rep Power: 2929
bloompyle has a reputation beyond reputebloompyle has a reputation beyond reputebloompyle has a reputation beyond reputebloompyle has a reputation beyond reputebloompyle has a reputation beyond reputebloompyle has a reputation beyond reputebloompyle has a reputation beyond reputebloompyle has a reputation beyond reputebloompyle has a reputation beyond reputebloompyle has a reputation beyond reputebloompyle has a reputation beyond repute
Default Re: Ionizing metal vapors with lasers?

With a handheld, I do not believe this is possible.

The energy required for this is extremely high. Though what you are referring to, is possible, outside of a handheld.

For instance, I spoke with a gentleman that uses a nanosecond laser, to send quick, high energy pulses, at targets, to ablate them.

In his demo, he used a grain a brown rice ....

Why is this done? Simple! To use a spectrometer to meter the plasma, and find the spectra for the material being ablated. Some tech is being used by the Mars rover to identify materials on the surface, to locate sources of water.

He also had an ENORMOUS pulsed CO2 laser that they used to heat up the plasma. Very neat stuff
__________________
"These things we do.
That others may live."

405nm 500mW
442nm 15mW Melles Griot HeCd
445nm 1W
455nm 100mW LaserBTB
457nm Tunable OMNI 532
465nm Tunable OMNI 532
467nm 1.8W NDB7675
472nm Tunable Omni 532
473nm 2x 100mW Melles Griot lab heads w/ PSUs
476nm Tunable OMNI 532
488nm Single line 35mW
496nm Tunable OMNI 532
502nm Tunable OMNI 532
514nm Tunable OMNI 532
520nm 40mW MSV2
532nm Various pointers
543nm GreeNe 2mW
568nm ~20mW ArKr whitelight line
589nm 126mW PGL-III-C
594nm Rigel-6; 4.75mW + <1mW
604nm 2x <1mW multiline
609nm Ne Penning mixture Ar line from REO 612nm
612nm HeNe 1mW ML 4 line; Raman 6 line
629nm <1mW Raman 6 line
633nm 1-4mw red HeNe
635nm Raman 6 line
638nm 20mW single mode
640nm Raman 6 line
647nm ~10mW ArKr whitelight Kr line
650nm Raman 6 line
658nm LPC-826
685nm 20mW
808nm Modded NewWish pen


HeNe/gas reference thread
bloompyle is online now   Reply With Quote
Old 03-05-2014, 11:56 PM #3
Sigurthr's Avatar
Class 3B Laser
 
Join Date: Dec 2011
Location: Michigan's U.P.
Posts: 4,382
Rep Power: 873
Sigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond repute
Sigurthr Sigurthr is offline
Class 3B Laser
Sigurthr's Avatar
 
Join Date: Dec 2011
Location: Michigan's U.P.
Posts: 4,382
Rep Power: 873
Sigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond repute
Default Re: Ionizing metal vapors with lasers?

The problem comes from the lack of absorbance due to reflectivity of metals. To overcome this you need a very high irradiance, and that kind of power isn't exactly handheld friendly. Typically far infrared is used to vaporize or cut metals, but very, very few materials transmit this wavelength, so if your intended metal sample is in an ampoule or envelope of some sort, you won't be able to get the light in to ionize it.

If I place a small sample of very oxidized Na metal into the focal point of my 15W CO2 laser it will vaporize some of the oxide. Doing so of course ignites the vapors since they are in air. If this would actually ionize the vapors in a vacuum, I don't know, but my gut says not enough energy to rip away electrons.
__________________
Amateur Multispectral Photographer - [X-Ray, UV, Vis, IR]
Amateur Electrical Engineer
Autodidact
Tesla Coil Expert
Sigurthr is offline   Reply With Quote
Old 03-13-2014, 02:31 AM #4
xirrious's Avatar
Class 2M Laser
 
Join Date: Dec 2013
Location: Va Beach, VA
Posts: 581
Rep Power: 58
xirrious has a reputation beyond reputexirrious has a reputation beyond reputexirrious has a reputation beyond reputexirrious has a reputation beyond reputexirrious has a reputation beyond reputexirrious has a reputation beyond reputexirrious has a reputation beyond reputexirrious has a reputation beyond reputexirrious has a reputation beyond reputexirrious has a reputation beyond reputexirrious has a reputation beyond repute
xirrious xirrious is offline
Class 2M Laser
xirrious's Avatar
 
Join Date: Dec 2013
Location: Va Beach, VA
Posts: 581
Rep Power: 58
xirrious has a reputation beyond reputexirrious has a reputation beyond reputexirrious has a reputation beyond reputexirrious has a reputation beyond reputexirrious has a reputation beyond reputexirrious has a reputation beyond reputexirrious has a reputation beyond reputexirrious has a reputation beyond reputexirrious has a reputation beyond reputexirrious has a reputation beyond reputexirrious has a reputation beyond repute
Default Re: Ionizing metal vapors with lasers?

Agreed
__________________
Wavelength Collection:
700mW 405nm Custom by Isaac T.
50mW 405nm Laser Pen
1500mW 445nm Custom
1000mW 445nm LuckLaser
3100mW 455nm Custom by Isaac T.
200mW 520nm 501B Custom
400mW 532nm SkyLaser HL-300 -Being Replaced.
100mW 532nm Laser Pen
50mW 589nm DragonLasers PGL-III-M
15mW 638nm 501B
800mW 650nm SkyLaser PL-1000
100mW 650nm Laser Pen
5mW 650mm SkyLaser Pen


"I appreciate the beauty and aroma of a rose as much as the next man, but an understanding of the physical and chemical processes that underly that beauty can only enrich the experience."

-Various hosts, diodes, and lenses awaiting assembly

Last edited by xirrious; 03-13-2014 at 02:33 AM.
xirrious is offline   Reply With Quote
Reply





Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On











Loading








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes






Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 09:36 AM.


Powered by: vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC