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New SHARP 450nm 1650mw

trinh hong phuoc

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THIS IS GH04C01A2G
I have seen these diode a month ago on ebay or some diode laser shop
Look at the datasheet, we see that these diode parameters are quite similar to the osram we had before,I hope this will be a low beam divergence diode,Sharp always provide good diode with good divergence ,example is 638nm
So, If anyone tested them or has them, please let me know and provide more infomation about this diode

THANK ALL


ls-l500.jpgs-l1600 (1).jpgs-l1600 (2).jpgs-l1600.jpg
 
Last edited:

aaronnoraa

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I hope this will be a low beam divergence diode
It is.. if the datasheet is correct for the new diode, it has lower divergence than the 490nm GH04850B2G which itself has excellent beam characteristics. For outputting 1.6W at that low divergence is seriously impressive.

GH04850B2G datasheet divergence-

GH04850B2G div.PNG

GH04C01A2G datasheet divergence-

GH04C01A2G div.PNG

Schwing!! :)
 

trinh hong phuoc

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Seems like the Vf is a bit higher than other 450nm diodes we have seen. I do wonder about those divergence specs as this must be a multi-mode diode. It should be easy to push it over 2 watts.
That's right, the sharp diode is often pushed higher than the datasheet,I found the divergence is very impressive with a 2w diode,If they are really good, I will choose it in my build instead of pltb450b
 

trinh hong phuoc

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[QUOTE = "Singlemode Laser, post: 1551381, thành viên: 53644"] Những điốt này dường như có thông số kỹ thuật tốt và tôi đang tìm kiếm để xem một số bức ảnh chùm và phép đo. Vẫn đang chờ đợi các chế độ đơn điốt 450nm 1W mà OSRAM đang phát triển cho ngành công nghiệp ô tô!

Singlemode [/ QUOTE]
it is great sound,i hope so
 
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paul1598419

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These diodes seem to have good specs and I am looking to see some beam pics and measurements. Still waiting for the single mode 1W 450nm diodes that OSRAM is developing for the car industry!

Singlemode
That sounds great. I would love to see a 1 watt 450nm single mode laser diode too. I hope we will be able to get our hands on them once they are being produced.
 

aaronnoraa

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I think that only looking at the beam. div. specs without knowing if it is a single or multi mode diode is not useful at all. Because the raw divergence of the diode has no relation to the final divergence when collimated with a lens.

Singlemode
Can you elaborate on that for me? After looking at the PLT450B raw divergence and comparing it to the 490nm diode divergence it seems that what you are saying must be true, though I have also noticed that diodes with horrible raw divergence figures (e.g. Mits P73) seem to have horrible collimated divergence as well. Is it just strictly single/multimode operation that defines the collimated result (meaning, for a given identical raw divergence on two multimode diodes, will they both have the same collimated divergence and if two single mode diodes had that same figure would the two single mode collimated outputs be the same as one another though far better than the multimode diodes, if that makes sense...)?

Also are the Sharp 490 diodes single mode or just excellent multimode divergence like the Osram 520nm diodes?
 

RedCowboy

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Would love to see some single mode blues that can be pushed past 2 watts, will be time to knife edge and stack some.
 

trinh hong phuoc

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Có nụ
I think that only looking at the beam. div. specs without knowing if it is a single or multi mode diode is not useful at all. Because the raw divergence of the diode has no relation to the final divergence when collimated with a lens.

Singlemode
Yes,that's right,but i hope this diode is low divergence, Everything can happen when we have a sharp 638nm diode with a half divergence mitsubisi diode
edit: An example is the plp520-b1 multi-mode diode, we have the right to hope
 
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paul1598419

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Even though that 520nm diode is a multi-mode, it doesn't have a very wide emitter and it is limited to the amount of power one can get from it, much like a Sharp single mode diode. It would be nice to get those new 450nm single mode laser diodes rated for 1 watt, as they can likely be driven quite a bit higher than just 1 watt. I only hope that we will be able to get our hands on some and they won't be terribly expensive. Only time will tell.
 

RedCowboy

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A 2w 450 with similar beam specs to our 405's would be fun and look sharp in the night air, of course a beam expander will make some longer tests possible.
 




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