Dismantling of green dpss Novalasers-X105

[GooeyGus]

There is a coating on the back of the vanadate (nd:yvo4) that reflects 1064nm. Your output coupler reflects 1064 but passes 532. So your lasing cavity is formed by the coating on the back of the vanadate and the OC mirror. So before adding the ktp you have a 1064nm laser. The ktp is then placed inside the cavity, between the mirrors and doubles the wavelength. The 1064 that didn't get doubled continues to resonate, to maintain lasing, while the green is allowed to exit.

 

[LarryQ]

Thanks for the pictures......

I don't know why...but I was shocked to see a C-Mount IR pump diode in there!

I guess it's all the time we spend with 5.6 MM Cans.

I learned something very interesting....though I did mourn the loss of an X-105!

Thanks again!!!

Larry

 

[nikokapo]

GREAT help with those tons of pics, good job man! Seriously, that will help lots of members. I think we should add these to the FAQ if you let us use your images



+ Rep for you good sir!!

EDIT: Hey, listen to the members, the parts you threw away weren't obsolete, EVEN if they didn't work. You can get creative and do crazy stuff with them. For example, thejunkmonger made a ring out of a dead CCD! The host could have been easily used for any laser host experiment too!

 

[GooeyGus]

Wow I need to start taking more pictures for you guys... I've done tons of different kinds of DPSS pen repair but I didn't know you all were so interested in it. If you'd like I can get pictures of an Aries dismantle and buildup, and really any other laser you guys would like. I did a wicked lasers executive series a few weeks ago, I took a lot of pictures but something messed up with my camera and they got corrupted. It went from 0mW to almost 75mW after I was done. It was only rated at 50mW to begin with

Anyway, if this is something you all would like to see more of, I can get you a ton of good pictures and tips  

 

[nikokapo]

Wow I need to start taking more pictures for you guys... I've done tons of different kinds of DPSS pen repair but I didn't know you all were so interested in it. If you'd like I can get pictures of an Aries dismantle and buildup, and really any other laser you guys would like. I did a wicked lasers executive series a few weeks ago, I took a lot of pictures but something messed up with my camera and they got corrupted. It went from 0mW to almost 75mW after I was done. It was only rated at 50mW to begin with  

Anyway, if this is something you all would like to see more of, I can get you a ton of good pictures and tips  

DO WANT!

 

[DocX]

yes that would be very helpful!

Since joining LPF I collected a number of green pointers... These are more interesting than the red or violet diodes in an aixiz module (got those too) :-? :

 

[murrat]

There is a coating on the back of the vanadate (nd:yvo4) that reflects 1064nm. Your output coupler reflects 1064 but passes 532. So your lasing cavity is formed by the coating on the back of the vanadate and the OC mirror. So before adding the ktp you have a 1064nm laser. The ktp is then placed inside the cavity, between the mirrors and doubles the wavelength. The 1064 that didn't get doubled continues to resonate, to maintain lasing, while the green is allowed to exit.

Lasing cavity can be formed by the coating on the back of Vanadate and front of KTP so we don't need an OC mirror.
I think OC mirrors are used at earlier versions

 

[murrat]

GREAT help with those tons of pics, good job man! Seriously, that will help lots of members. I think we should add these to the FAQ if you let us use your images



+ Rep for you good sir!!

EDIT: Hey, listen to the members, the parts you threw away weren't obsolete, EVEN if they didn't work. You can get creative and do crazy stuff with them. For example, thejunkmonger made a ring out of a dead CCD! The host could have been easily used for any laser host experiment too!

Thanks for your comments and +reps
I'll add a new zip file for higher resolution version of these photos at night.

Everyone who wrote under my this topic made me feel much sorry about throwing these parts away :-? I'll keep this in mind and never gonna throw anything away

 

[murrat]

Here are the high resolution photos  
[highlight]WARNING 18,1MB zip file [/highlight]

 

[GooeyGus]

[quote author=GooeyGus link=1237152412/16#16 date=1237332506]There is a coating on the back of the vanadate (nd:yvo4) that reflects 1064nm. Your output coupler reflects 1064 but passes 532. So your lasing cavity is formed by the coating on the back of the vanadate and the OC mirror. So before adding the ktp you have a 1064nm laser. The ktp is then placed inside the cavity, between the mirrors and doubles the wavelength. The 1064 that didn't get doubled continues to resonate, to maintain lasing, while the green is allowed to exit.

Lasing cavity can be formed by the coating on the back of Vanadate and front of KTP so we don't need an OC mirror.
I think OC mirrors are used at earlier versions [/quote]


OC mirrors are for higher power green lasers. Those bonded sets with the coatings to form the mirrors are only supposed to be pumped with 500mW max. OC mirrors allow for MUUUUCH better tuning, and are a good indication that you have a high quality laser. Never trust a 200mW pen with a bonded crystal set. Chances are in makes less than 200mW or is very unstable.

 

[LarryQ]

Let's see the man behind the curtain....

More green tear down pics!

Sometimes I catch myself taking this hobby for granted!

So much science...so little time!

hehehehehehe


Larry

 

[murrat]

OC mirrors are for higher power green lasers. Those bonded sets with the coatings to form the mirrors are only supposed to be pumped with 500mW max. OC mirrors allow for MUUUUCH better tuning, and are a good indication that you have a high quality laser. Never trust a 200mW pen with a bonded crystal set. Chances are in makes less than 200mW or is very unstable.

What is the difference between them?
Don't they both have the same coatings?  

 

[ElektroFreak]

[quote author=murrat link=1237152412/16#22 date=1237382750][quote author=GooeyGus link=1237152412/16#16 date=1237332506]There is a coating on the back of the vanadate (nd:yvo4) that reflects 1064nm. Your output coupler reflects 1064 but passes 532. So your lasing cavity is formed by the coating on the back of the vanadate and the OC mirror. So before adding the ktp you have a 1064nm laser. The ktp is then placed inside the cavity, between the mirrors and doubles the wavelength. The 1064 that didn't get doubled continues to resonate, to maintain lasing, while the green is allowed to exit.

Lasing cavity can be formed by the coating on the back of Vanadate and front of KTP so we don't need an OC mirror.
I think OC mirrors are used at earlier versions [/quote]


OC mirrors are for higher power green lasers. Those bonded sets with the coatings to form the mirrors are only supposed to be [highlight]pumped with 500mW max[/highlight]. OC mirrors allow for MUUUUCH better tuning, and are a good indication that you have a high quality laser. Never trust a 200mW pen with a bonded crystal set. Chances are in makes less than 200mW or is very unstable. [/quote]

That's the maximum that CASIX's DPMs are rated to. IIRC There are other manufacturers that supply higher rated hybrids, and I think CASIX supplies them as well, but not to the public..

What is the difference between them?
Doesn't both have the same coatings?

The coating on the crystal output facet is very similar to the coating on an OC mirror. The fact that the OC mirror is not attached to the crystals is what allows for better tuning.

 

[FireMyLaser]

I've been looking for this for the longest time!! Maybe now I can fix my TEM10 x-125.

Thanks!

 

[murrat]

The coating on the crystal output facet is very similar to the coating on an OC mirror. The fact that the OC mirror is not attached to the crystals is what allows for better tuning.

AFAIK you just move OC mirror, closer or far to the diode (with coated hybrid cyrstals you move cyrstals, with OC mirror you also have to align the cystals I think) to adjust the power output.
What is the difference between moving hybrid cyrstals (having coated facets) and moving OC mirror?

 

[murrat]

I've been looking for this for the longest time!! Maybe now I can fix my TEM10 x-125.

Thanks!

Hope you can. Be carefull while putting pieces back together