Want to talk about soil? Join us for Open Call every Tuesday until Mar. 30 and our kick-off call on this topic on Feb. 2! Click here for details on how to join!

Public Lab Research note


The user 'dhaffnersr' has been placed in moderation and will not be able to respond to comments.

New Laser Testing Using a 405nm UV laser Pointer and a 532nm Portable Green Laser

by dhaffnersr | September 08, 2016 11:54 08 Sep 11:54 | #13429 | #13429

New testing on a 0.05mm Gillette razor Blade Utility Knife Open-Air Slit (based on my previous design.)

I wanted to see just how much more resolution I could squeeze out of this spectrometer, so I remove the 0.09mm Gillette razor blade slit and redid the design with a pair of Gillette utility knife razor blades. This took me about two hours to get it perfect but I got it right, now I have a 0.05mm open-air slit width, pretty incredible I would say, I used the same testing method as I did in a previous post on the 0.09mm open-air slit.

Now I have a spectral bandwidth of 0.68nm, and here is my proof;

EEM_532nm_laser_log_view.png

An EEM (emission excitation matrix,) allows for a kind of 2 dimensional view that lets one examine in detail, an emission (X-axis,) and an excitation (Y-axis,) of your data.

The next plot is Fig.1, which is the peak for the 532nm green laser;

488_650nm_532nm_green_laser_sept_7.png

Fig.2 is zoomed in 1X, to show full laser line (532nm);

532nm_laser_view_2_sept_7.png

Fig.3 are both lasers together, wavelength range is 400 - 600nm;

BOTH_405nm_532nm_lasers_sept_7.png

Fig.4 is the 405nm UV laser pointer peak;

400_680nm_405nm_UV_laser_pointer_sept_7.png

reference

http://publiclab.org/notes/dhaffnersr/08-23-2016/final-data-analysis-for-my-new-0-11mm-entrance-slit-design


0 Comments

Login to comment.