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.




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 > Laser Measurements

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



Reply
 
LinkBack Thread Tools Display Modes
Old 06-19-2014, 08:02 PM #1
Junior Member
 
Join Date: Jun 2014
Location: Louisiana, USA
Posts: 6
Rep Power: 0
PenguinLife is on a distinguished road
PenguinLife PenguinLife is offline
Junior Member
 
Join Date: Jun 2014
Location: Louisiana, USA
Posts: 6
Rep Power: 0
PenguinLife is on a distinguished road
Default EG&G Electro-Optics 460-1A use/repair?

I am just getting back into the laser hobby after a multi-year absence with my first purchase of a multi-watt 445 nm laser, and I am interested in trying to use the EG&G Electro-Optics 460-1A that I bought on ebay a while back to confirm its output, etc.

Now for the problems I know I need to do a LOT of attenuation to get a good reading since this meter is natively limited to 19.999 mw, I am just not sure what is the best way to get there as I am concerned about bleaching, etc if I use neutral density filters. Maybe multiple low pass beam splitters followed by a mid level ND filter?

Next issue there is something wrong with the ambient zero adjustment on my meter, the knob turns on the gear reduced pot, but does not change the display 0 (sensor does respond to varying light), can I safely assume I can ignore this tare zero and just use a calculator to adjust the base reading? The circuit board seems simple enough I may try to give it another visual check.

Finally the photo sensor head has multiple calibration frequencies, which includes 632.8 nm for helium neon, but does not include 445 nm (it does include 441.6 though) So my thought was to use a He-Ne laser in its native range say 5-10 mw to get an initial output reading (assuming its 2006 dated calibration is still good) set to 632.8,, then get another reading through the attenator setup and calculate the amount of attenuation, then switch the sensor head 460-2 to 441.6 mode and get a reading on the 445 nm laser. (this switch adjusts calibration of the photo sensors spectral response curve which I assum would be fairly close at 441.6 even though the response curve on photo cell sensors drop off quickly at the blue end) My concern here is of course spectral response of the attenuator setup changing from 632.8 nm to 445 nm. Any thoughts?

Thanks

p.s. I have a few lasers already, but all are red, mostly HeNe, but some diode lasers also. I may be able to scavenge a blue laser from a dead first generation Samsung blu-ray player, but I don't know its output level, and given the already steep drop off curve at the blue end of the spectrum and no calibration setting near the blu-ray laser frequency I would probably just be trading inaccuracy in the detector vs closer spectral response in the attenuator


PenguinLife is offline   Reply With Quote







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






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 08:51 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