piferal
0
- Joined
- Apr 5, 2011
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Hey guys,
Today is the turn to an 635nm laser diode with photodiode and with 7mW optical power.
I was surprised by the beam profile, as we shall see, is very stretched.
Also say that except the LD extracted from the DVD, all the other LD's emit light from the sides, left and right, this one also.
And also compared to other red laser diodes, the longitudinal wave guide of this laser diode is much shorter,
only 0,30mm, the Mitsubishi is 2.17mm (huge difference).
In this diode have not found marks or references in the chip, as found in others laser diodes photographed before.
Also unlike the reds at 650nm, in this one the case is positive.
For those who want to see the differences or compare my others red LD's with this one HERE and HERE you have the links.
And also for those who want, HERE also you have the link to one 405nm violet laser diode photographed some days ago.
Now the data I have, are as follow:
Brand and model unknown.
Optical output: 7mW
Operating current: 20mA
Operating voltage: 2.2V
Wavelength: 635nm
Package: Ø 5.6mm, Closed can.
Case positive.
------------------------------------------------------------------------------------------------------
The first 3 photos is for you can compare the profile of the beam of the LD from Mitsubishi, the LD extracted
from and DVD, and this one, (These 3 diodes have a beam profile very different from one to other.)
Also you can see quite well in the first photo, the typical something orange color of this wavelength.
In the next 12 photos general overview of the LD from various angles.
Now different views and angles, but more closely.
As shown in this picture, and as with the red laser diodes to date, the upper substrate is tilted.
The photodiode and its dimensions.
In the next 3 photos you can see the dimensions of different parts of the LD.
End
Today is the turn to an 635nm laser diode with photodiode and with 7mW optical power.
I was surprised by the beam profile, as we shall see, is very stretched.
Also say that except the LD extracted from the DVD, all the other LD's emit light from the sides, left and right, this one also.
And also compared to other red laser diodes, the longitudinal wave guide of this laser diode is much shorter,
only 0,30mm, the Mitsubishi is 2.17mm (huge difference).
In this diode have not found marks or references in the chip, as found in others laser diodes photographed before.
Also unlike the reds at 650nm, in this one the case is positive.
For those who want to see the differences or compare my others red LD's with this one HERE and HERE you have the links.
And also for those who want, HERE also you have the link to one 405nm violet laser diode photographed some days ago.
Now the data I have, are as follow:
Brand and model unknown.
Optical output: 7mW
Operating current: 20mA
Operating voltage: 2.2V
Wavelength: 635nm
Package: Ø 5.6mm, Closed can.
Case positive.
------------------------------------------------------------------------------------------------------
The first 3 photos is for you can compare the profile of the beam of the LD from Mitsubishi, the LD extracted
from and DVD, and this one, (These 3 diodes have a beam profile very different from one to other.)
Also you can see quite well in the first photo, the typical something orange color of this wavelength.
In the next 12 photos general overview of the LD from various angles.
Now different views and angles, but more closely.
As shown in this picture, and as with the red laser diodes to date, the upper substrate is tilted.
The photodiode and its dimensions.
In the next 3 photos you can see the dimensions of different parts of the LD.
End
.
