My first 561nm pointer

[paul1598419]

I have a 30mW to 40mW 561nm pen-style laser on the way.
Uses either 2x AAA cells or one 10440 Li:Ion cell plus a dummy battery.

Unfortunately, I no longer own or have access to a spectrometer or even a spectroscope, so the best I'll be able to do is "eyeball" the wavelength.

https://imgur.com/a/0cxFDnM

ETA is ~08-05-23.

I've never seen this wavelength, so I'm kinda stoked!!!

In a pinch you can use a diffraction grating and just measure the distances. I have a whole two foot sheet of 1000 lines/mm. It works well for this before I got my spectrometer.

 

[The LED (& Laser) Museum]

In a pinch you can use a diffraction grating and just measure the distances. I have a whole two foot sheet of 1000 lines/mm. It works well for this before I got my spectrometer.

I'm aware of the diffraction grating trick, but I don't own or have access to one of those things.
When I said I lost everything after my stroke, I really did mean EVERYTHING.

 

[paul1598419]

I'm aware of the diffraction grating trick, but I don't own or have access to one of those things.
When I said I lost everything after my stroke, I really did mean EVERYTHING.

Sorry to hear that. If you like I can mail you a sheet of mine in an envelope for the price of one postage stamp. Send me a PM and I'll get your address and mail one to you.

 

[The LED (& Laser) Museum]

Sorry to hear that. If you like I can mail you a sheet of mine in an envelope for the price of one postage stamp. Send me a PM and I'll get your address and mail one to you.

Done, thank you!!!
I used the, "Start Conversation" link found by hovering over your avatar.
Hover over mine to get the link.

 

[paul1598419]

Got it. It will be in the mail this week. I need to find the large sheet among the many boxes of lasers and parts that I have.

 

[The LED (& Laser) Museum]

Got it. It will be in the mail this week. I need to find the large sheet among the many boxes of lasers and parts that I have.

Thanks Paul!!!

 

[paul1598419]

Thanks Paul!!!

You are more than welcome. Take care buddy.

 

[kecked]

That looks 561 ish yellow green

 

[The LED (& Laser) Museum]

That looks 561 ish yellow green

It's supposed to be here today, so I'll know soon enough.
(Edit 12:31pm PDT) Tracking indicates that it has been delivered; however my sister has not yet gone to check the mail.

 

[The LED (& Laser) Museum]

The color is simply amazing!!!

 

[The LED (& Laser) Museum]

I'm presently attempting to photograph the laser & its beam, but I'm meeting with very little success because I no longer own or have access to a camera. The camera inbuilt into my cellular telephone handset does not have a self-timer which would be necessary here.

 

[paul1598419]

I'm presently attempting to photograph the laser & its beam, but I'm meeting with very little success because I no longer own or have access to a camera. The camera inbuilt into my cellular telephone handset does not have a self-timer which would be necessary here.

You could use a twist tie to hold the tactile switch down then photograph the laser. Just a thought.

 

[The LED (& Laser) Museum]

You could use a twist tie to hold the tactile switch down then photograph the laser. Just a thought.

Now that's a stellar idea, thanks!!!
Now, where to find a twist-tie.

 

[The LED (& Laser) Museum]

These are of the beam terminus spot and the three diffractive "star caps" that are furnished with the laser.
All photographs were taken ~2 feet (0.6096M) from a white door.

 

[tinkertavernco]

It’s always been so strange to me that cameras don’t “get” 561nm (and other yellow wavelengths) - then suddenly around 580nm they realize it’s actually yellow!

Makes it even nicer to see it in person though.

 

[paul1598419]

I found my sheet of diffraction grating and put it in my mail box to go out to you today Craig. Hope it finds you soon.