Commercial laser diodes

[George Herold]

Hi all, Searching for commercial laser diodes.
wavlength ~600- 900 nm, power ~100mW, price <$50.00

Mouser seems to have the best selection.
I found this from Osram
https://dammedia.osram.info/media/resource/hires/osram-dam-4111646/SPL%20TR85_EN.pdf

And this two wavelength one from Panasonic
https://www.mouser.com/datasheet/2/315/LNCT28PF01WW_E-472777.pdf

Anyone know of other sources. Oh there is Thor labs... (spendy)

George H.

 

[Phil Hobbs]

On 2020-02-04 11:29, George Herold wrote:

Hi all, Searching for commercial laser diodes.
wavlength ~600- 900 nm, power ~100mW, price <$50.00

Mouser seems to have the best selection.
I found this from Osram
https://dammedia.osram.info/media/resource/hires/osram-dam-4111646/SPL%20TR85_EN.pdf

And this two wavelength one from Panasonic
https://www.mouser.com/datasheet/2/315/LNCT28PF01WW_E-472777.pdf

Anyone know of other sources. Oh there is Thor labs... (spendy)

George H.

Rip apart a DVD burner. You get two high power red diodes (650 and 780
nm) mounted on the same header, with decent heat sinking and a flex
circuit to connect with it.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com

 

On Tue, 4 Feb 2020 08:29:39 -0800 (PST), George Herold
<ggherold@gmail.com> wrote:

Hi all, Searching for commercial laser diodes.
wavlength ~600- 900 nm, power ~100mW, price <$50.00

Mouser seems to have the best selection.
I found this from Osram
https://dammedia.osram.info/media/resource/hires/osram-dam-4111646/SPL%20TR85_EN.pdf

And this two wavelength one from Panasonic
https://www.mouser.com/datasheet/2/315/LNCT28PF01WW_E-472777.pdf

Anyone know of other sources. Oh there is Thor labs... (spendy)

George H.

We buy a lot of fiber-coupled lasers and photodiodes from Appointech,
who seem to be consistently good. Maybe they have free-space stuff
too.




--

John Larkin Highland Technology, Inc

The cork popped merrily, and Lord Peter rose to his feet.
"Bunter", he said, "I give you a toast. The triumph of Instinct over Reason"

 

[George Herold]

On Tuesday, February 4, 2020 at 12:08:42 PM UTC-5, Phil Hobbs wrote:

On 2020-02-04 11:29, George Herold wrote:
Hi all, Searching for commercial laser diodes.
wavlength ~600- 900 nm, power ~100mW, price <$50.00

Mouser seems to have the best selection.
I found this from Osram
https://dammedia.osram.info/media/resource/hires/osram-dam-4111646/SPL%20TR85_EN.pdf

And this two wavelength one from Panasonic
https://www.mouser.com/datasheet/2/315/LNCT28PF01WW_E-472777.pdf

Anyone know of other sources. Oh there is Thor labs... (spendy)

George H.


Rip apart a DVD burner. You get two high power red diodes (650 and 780
nm) mounted on the same header, with decent heat sinking and a flex
circuit to connect with it.

Ahh that explains the Panasonic part. Oh boy... again perhaps surfing the
trailing edge of technology. :^) If it/ they work I'll need to buy a boat load.

George H.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com

 

[George Herold]

On Tuesday, February 4, 2020 at 11:55:52 AM UTC-5, jla...@highlandsniptechnology.com wrote:

On Tue, 4 Feb 2020 08:29:39 -0800 (PST), George Herold
ggherold@gmail.com> wrote:

Hi all, Searching for commercial laser diodes.
wavlength ~600- 900 nm, power ~100mW, price <$50.00

Mouser seems to have the best selection.
I found this from Osram
https://dammedia.osram.info/media/resource/hires/osram-dam-4111646/SPL%20TR85_EN.pdf

And this two wavelength one from Panasonic
https://www.mouser.com/datasheet/2/315/LNCT28PF01WW_E-472777.pdf

Anyone know of other sources. Oh there is Thor labs... (spendy)

George H.

We buy a lot of fiber-coupled lasers and photodiodes from Appointech,
who seem to be consistently good. Maybe they have free-space stuff
too.

Oh thanks. If my first tests work, then I was thinking I could use
two fiber coupled PD's to measure light. I think I'd like big fat
fibers...which may not be common.

george H.

--

John Larkin Highland Technology, Inc

The cork popped merrily, and Lord Peter rose to his feet.
"Bunter", he said, "I give you a toast. The triumph of Instinct over Reason"

 

[George Herold]

On Tuesday, February 4, 2020 at 12:58:02 PM UTC-5, George Herold wrote:

On Tuesday, February 4, 2020 at 12:08:42 PM UTC-5, Phil Hobbs wrote:
On 2020-02-04 11:29, George Herold wrote:
Hi all, Searching for commercial laser diodes.
wavlength ~600- 900 nm, power ~100mW, price <$50.00

Mouser seems to have the best selection.
I found this from Osram
https://dammedia.osram.info/media/resource/hires/osram-dam-4111646/SPL%20TR85_EN.pdf

And this two wavelength one from Panasonic
https://www.mouser.com/datasheet/2/315/LNCT28PF01WW_E-472777.pdf

Anyone know of other sources. Oh there is Thor labs... (spendy)

George H.


Rip apart a DVD burner. You get two high power red diodes (650 and 780
nm) mounted on the same header, with decent heat sinking and a flex
circuit to connect with it.
Ahh that explains the Panasonic part. Oh boy... again perhaps surfing the
trailing edge of technology. :^) If it/ they work I'll need to buy a boat load.

Hey the panasonic DL's are at 780 and 660 nm... It'd be a hoot to have one
DL do Rb at 780 and the lamb shift in hydrogen at ~650 nm (I went looking for
the right wavelength, but failed.)

George H.

George H.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com

 

Also remember you can steer the wavelength with reflection from a grating..

Steve

 

Google DTR Lasers for visible diodes. Caters to the hobbyist / laser show / pointer market. So far he's been a "Good Egg" in ally my transactions over the years.

Steve

 

[George Herold]

On Wednesday, February 5, 2020 at 6:55:58 PM UTC-5, srober...@gmail.com wrote:

Also remember you can steer the wavelength with reflection from a grating..

Steve

Yeah! BTDT at 780 nm. fun stuff!
Hey I've got a half baked design for georeg's 'any lamda' diode laser.
(different laser and gratings on a common mirror mount type thing.)
Steve, you probably already know this, but the most important thing in a
grating feed back diode laser is getting the lens position 'just right'.

George H.

 

[George Herold]

On Wednesday, February 5, 2020 at 6:54:38 PM UTC-5, srober...@gmail.com wrote:

Google DTR Lasers for visible diodes. Caters to the hobbyist / laser show / pointer market. So far he's been a "Good Egg" in ally my transactions over the years.

Steve

Thanks Steve. I've ordered this two wavelength DL from panasonic
(650 and 780 nm)
I'm not at all sure, but my gut says this correlation measurement has a better
chance to work at longer wavelengths.... more photons for same power..
but again I'm not at all sure. And the whole thing could crash and burn.

George H.

 

Given the declining popularity of CD/DVD drives--how many years has it been since notebooks came with one?--I have been wondering if the days of cheap 405/650/780 nm diode lasers will come to an end in the next few years.

Steve, you probably already know this, but the most important thing in a
grating feed back diode laser is getting the lens position 'just right'.
In my experience, getting the laser cavity mode to overlap with the extended cavity mode is a arguably as important (unless you decap the laser and deposit a coating to reduce the Q of the laser cavity BTDT). Which is why one mounts the grating on piezos. And if you're going to play with feedback, having an optical isolator to prevent unexpected feedback is what I would put as most important. But I am not aware of a good source for bargain isolators. :-(

 

[George Herold]

On Thursday, February 6, 2020 at 6:13:56 PM UTC-5, st...@qprinstruments.com wrote:

Given the declining popularity of CD/DVD drives--how many years has it been since notebooks came with one?--I have been wondering if the days of cheap 405/650/780 nm diode lasers will come to an end in the next few years.

Steve, you probably already know this, but the most important thing in a
grating feed back diode laser is getting the lens position 'just right'..
In my experience, getting the laser cavity mode to overlap with the extended cavity mode is a arguably as important

Right you've gotta have that too... I always wanted a laser diode with
AR coating on output.
>(unless you decap the laser and deposit a coating to reduce the Q of the laser cavity BTDT). Which is why one mounts the grating on piezos. And if you're going to play with feedback, having an optical isolator to prevent unexpected feedback is what I would put as most important. But I am not aware of a good source for bargain isolators. :-(
Oh I can show you the poor mans optical isolator.
Best to stick it right before/ after the reflective surface.
You need a linear polarizer and then 1/4 wave-plate.
you typically have to tune the wave plate some.

George H.

 

[Bill Sloman]

On Friday, February 7, 2020 at 10:13:56 AM UTC+11, st...@qprinstruments.com wrote:

Given the declining popularity of CD/DVD drives--how many years has it been since notebooks came with one?--I have been wondering if the days of cheap 405/650/780 nm diode lasers will come to an end in the next few years.

Steve, you probably already know this, but the most important thing in a
grating feed back diode laser is getting the lens position 'just right'..
In my experience, getting the laser cavity mode to overlap with the extended cavity mode is a arguably as important (unless you decap the laser and deposit a coating to reduce the Q of the laser cavity BTDT). Which is why one mounts the grating on piezos. And if you're going to play with feedback, having an optical isolator to prevent unexpected feedback is what I would put as most important. But I am not aware of a good source for bargain isolators. :-(

Stacks of microscope slides at the Brewster angle can be pretty cheap.

--
Bill Sloman, Sydney