HeNe HV Connectors

Hemlock_Mike · Feb 17, 2010

I know what you mean by cage but it is fragile and those seals and mirror mounts just ask to be broken. If I can find a piece of rigid clear pipe (1.58" ID) --- the tube is beautiful when lit up.

HMike

photonaholic · Feb 18, 2010

Hemlock_Mike said:
--- the tube is beautiful when lit up.

HMike

Me like it Mike!!

Machine a slot window in that black tube, if you could fabricate some sort of "shutter" to open and close, that would be phenomenal.

daguin · Feb 18, 2010

Hemlock_Mike said:
I know what you mean by cage but it is fragile and those seals and mirror mounts just ask to be broken. If I can find a piece of rigid clear pipe (1.58" ID) --- the tube is beautiful when lit up.

HMike

I love the visual incongruity of the salmon colored plasma producing a green colored laser beam. I understand it, but still enjoy the dissonance created in the mind. Most of the people that see my lamp also remark on the color difference.

Peace,
dave

photonaholic · Feb 18, 2010

Quite honestly I did not understand it until I read posts from you guys here.

For years I had thought it was something to do with the gas mix ratios...

Hanging around here has been immensely educational in many ways.

Hemlock_Mike · Feb 18, 2010

Wayne ---

A HeNe uses mainly He and Ne to lase but trace amounts of other gases are added to enhance operation with other colors -- green, yellow and IR. Still, it's the Ne that we see lighting up the bore in the tube.

HMike

photonaholic · Feb 19, 2010

I read that optical tuning has a large role in the output colour?

Another thread I found fascinating was LaserBen's piezo tuned laser, that was a work of art.

Hemlock_Mike · Feb 19, 2010

Wayne ---

The dichroic coatings on the mirrors determines the resonate wavelength of the cavity but the gas mix enhanses or sometimes makes the specific color.
CO2 lasers have little CO2 in them. Most is HE, N2 plus a pinch of H2O sometimes. Newer lasers include other gases to raise efficiency of the inversion.

HMike

photonaholic · Feb 19, 2010

thanks for the enlightenment, my brain is always thirsty for input,,,,,

Cyparagon · Feb 19, 2010

Is it really that pink? Probably not a good thing.

Hemlock_Mike · Feb 19, 2010

Cypar ---

Interesting observation. I looked at the green tube and unlike my reds, it has a frosted glass plasma tube which seems to soften the light but it is salmon colored. I tried a 5 mW red with a clear tube and it is about the same color.
It looks like Dave's are more red in his pictures. Welllll maybe just brighter. Hmmmmmm

HMike

Hemlock_Mike · Feb 26, 2010

I finally got my ballast resistors mounted in the housing for my HeNe Green laser. 75K Ohms @ 6 watts. Arcing was a problem at first but I got it all insulated. This tube is putting out 2 mW of what I measure with my spectroscope as ~540 nM wavelength

This photo shows the black laser tube protective housing, PS and my spectroscope.
The PS supplies 6.6 mA to the tube with 13 Vdc input. If I can find a clear tube for a good price, I will remount it so the plasma can be seen.

This photo shows a comparison of a 6 mW green DPSS pointer on the left and the HeNe Green on the right. My eyes can't distinguish the difference in wavelength - So slight.

HMike

And thanks to Dave for the Alden plug !!

HeNe HV Connectors

Hemlock_Mike

0

photonaholic

0

daguin

0

photonaholic

0

Hemlock_Mike

0

photonaholic

0

Hemlock_Mike

0

photonaholic

0

Cyparagon

0

Hemlock_Mike

0

Hemlock_Mike

0

Online statistics

Forum statistics

Share this page