Old 04-08-2009, 08:09 PM #33
Warske's Avatar
Class 1M Laser
 
Join Date: Mar 2009
Posts: 145
Rep Power: 11
Warske is a jewel in the roughWarske is a jewel in the roughWarske is a jewel in the rough
Warske Warske is offline
Class 1M Laser
Warske's Avatar
 
Join Date: Mar 2009
Posts: 145
Rep Power: 11
Warske is a jewel in the roughWarske is a jewel in the roughWarske is a jewel in the rough
Default Re: Measuring Wavelength?

Quote:
Originally Posted by Laserman532
...how far would the wall have to be away from the source to resolve 1nm using a steel ruler with 1/4" divisions? ...
You mean you want me to actually work for my +1?

If the wall is 41 feet away, and you use a 500 line/mm grating, a red 660 nm laser will shift about 1/4" along the wall when the wavelength changes by 1 nm. The beam from a green laser would shift about the same amount but just a bit less because the wall is not curved.

That's somewhat far for practical purposes, so you could use a ruler with finer divisions or a grating with more lines/mm. 500/mm is rather low actually, but it is what Teachersource is selling.


__________________
I am gone.
Warske is offline   Reply With Quote


















Old 04-08-2009, 08:26 PM #34
Diode_Virgin's Avatar
Class 2 Laser
 
Join Date: Dec 2008
Posts: 413
Rep Power: 12
Diode_Virgin will become famous soon enoughDiode_Virgin will become famous soon enough
Diode_Virgin Diode_Virgin is offline
Class 2 Laser
Diode_Virgin's Avatar
 
Join Date: Dec 2008
Posts: 413
Rep Power: 12
Diode_Virgin will become famous soon enoughDiode_Virgin will become famous soon enough
Default Re: Measuring Wavelength?

thanks! I would have thought it would be farther.
__________________
Pat B.

Great Optical Mounts and Do Dads at www.microlaserlabs.com

Pat B. on alt.lasers
laserman532 on PL
laserman532 on Ebay
Diode_Virgin 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


LinkBacks (?)
LinkBack to this Thread: https://laserpointerforums.com/f44/measuring-wavelength-27854.html
Posted By For Type Date
What is WAVELENGTH MEASURED IN FOR A LASER? This thread Refback 01-21-2013 08:54 PM


























Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 01:59 AM.


Powered by: vBulletin
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC