Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers



Very Sharp Bandwidth 785nm Laser

Civitus

Member
Joined
Mar 1, 2017
Messages
77
Points
8
Hi
I am new in this forum.
Can anyone can tell me if there is or if i can buy somewhere a narrow band 785nm laser (lower than 0.5nm width)

Civitus
 



diachi

Well-known member
Joined
Feb 22, 2008
Messages
9,736
Points
113
Hi
I am new in this forum.
Can anyone can tell me if there is or if i can buy somewhere a narrow band 785nm laser (lower than 0.5nm width)

Civitus
How much power do you need? What's your application? Good beam specs required? Some more detail would help us come up with an answer. :)

Filling out your profile with a location and such is also helpful, we can recommend sources that are suited to your location in that case.
 

Civitus

Member
Joined
Mar 1, 2017
Messages
77
Points
8
Thank you Diachi,
I need a laser to build a Raman system for my students.
I need at least 400mW
I have just updated my informations
 

Civitus

Member
Joined
Mar 1, 2017
Messages
77
Points
8
Waw!
Nice product, but sort of expensive for me , i have to build or to buy a driver, a TEC cooling.
but , i will think about this possibility
thank you, i am going to poste an other question on green lasers hihihi
 

diachi

Well-known member
Joined
Feb 22, 2008
Messages
9,736
Points
113
Waw!
Nice product, but sort of expensive for me , i have to build or to buy a driver, a TEC cooling.
but , i will think about this possibility
thank you, i am going to poste an other question on green lasers hihihi

Not sure you'll be able to find it any cheaper ... I'll see if I can locate anything. All of the others I've seen so far don't have prices listed and are "contact for quote", which usually means they are pricey.

"hihihi" - Are you a ham radio operator by any chance? :p
 

paul1598419

Well-known member
Joined
Sep 20, 2013
Messages
15,887
Points
113
A 0.5nm bandwidth is not very narrow. The He-Ne lasers I have are less than 0.065nm wide. Why do you want to use 785nm? That would be an expensive wavelength.

Edit: there's a 785nm Ocean Optics Raman spectrometer on eBay, but the guy wants $17,000.00 for it. Good luck.
 
Last edited:

Cyparagon

Well-known member
Joined
Sep 12, 2007
Messages
9,595
Points
113
If it were me, I'd buy a bunch of CD burner laser diodes and bin them. The problem with that is they're rated closer to 100mW, not 400mW.
 

Civitus

Member
Joined
Mar 1, 2017
Messages
77
Points
8
Not sure you'll be able to find it any cheaper ... I'll see if I can locate anything. All of the others I've seen so far don't have prices listed and are "contact for quote", which usually means they are pricey.

"hihihi" - Are you a ham radio operator by any chance? :p
Thank you Diachi,
indeed, the 785nm lasers are really pricey :(
I think that I am going to try the 532nm Raman system, as that laser is not that expensive.

no, unfortunatly, I am not ham radio operator ;)
 

Civitus

Member
Joined
Mar 1, 2017
Messages
77
Points
8
Dear paul1598419,

You are right 0.5nm is not that narrow, i was just speaking comparing to the 5 or even 10nm of the laser pointers we can get in the market.
I need a narrow band (as narrow as possible, but also as cheaop as possible ) for the Raman application, we need narrow to get better resolution.

But as you said, I am going to try the 532nm i may get lower prices.
 

Civitus

Member
Joined
Mar 1, 2017
Messages
77
Points
8
Yes Cyparagon,
I need at least 400mW, 100mW is just not enough to get the raman signal.
Many thanks
 

lasersbee

Well-known member
Joined
Sep 20, 2008
Messages
17,628
Points
113
No need to triple post... It is frowned upon on the
Forum.
You can easily add or modify one of your existing
Posts by using the [EDIT] button at the bottom
of any of your posts.

You can also combine Quotes using the [MULTIQUOTE]
button in the same area under your posts. :)

Jerry
 
Last edited:




Top