J
John Larkin
Guest
https://www.onsemi.com/products/sensors/silicon-photomultipliers-sipm
Onsemi is not pure gumdrops any more.
Onsemi is not pure gumdrops any more.
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B
Bill Beaty
Guest
On Friday, August 30, 2019 at 4:27:10 PM UTC-7, John Larkin wrote:
> Onsemi is not pure gumdrops any more.
Soon your "RFID powder" can have gamma spectrometers onboard.
> Onsemi is not pure gumdrops any more.
Soon your "RFID powder" can have gamma spectrometers onboard.
G
George Herold
Guest
On Friday, August 30, 2019 at 7:27:10 PM UTC-4, John Larkin wrote:
Cool, thanks! The dark count rate for the 850 nm ones is pretty bad.)
(2.5 MHz.!)
Hey and stock at DK for ~$50--60 each.
George H.
https://www.onsemi.com/products/sensors/silicon-photomultipliers-sipm
Onsemi is not pure gumdrops any more.
Cool, thanks! The dark count rate for the 850 nm ones is pretty bad.)
(2.5 MHz.!)
Hey and stock at DK for ~$50--60 each.
George H.
J
Jon Elson
Guest
On Sat, 31 Aug 2019 10:51:25 -0700, George Herold wrote:
The Hamamatsu parts are a lot better for dark current, but may be a lot
harder to get. We've been working with their 14160 parts and they work a
lot better. Also, in modest quantities, they are cheaper, and in large
quantity they are WAY cheaper, like $11 each.
Jon
On Friday, August 30, 2019 at 7:27:10 PM UTC-4, John Larkin wrote:
https://www.onsemi.com/products/sensors/silicon-photomultipliers-sipm
Onsemi is not pure gumdrops any more.
Cool, thanks! The dark count rate for the 850 nm ones is pretty bad.)
(2.5 MHz.!)
Hey and stock at DK for ~$50--60 each.
George H.
The Hamamatsu parts are a lot better for dark current, but may be a lot
harder to get. We've been working with their 14160 parts and they work a
lot better. Also, in modest quantities, they are cheaper, and in large
quantity they are WAY cheaper, like $11 each.
Jon
U
Uwe Bonnes
Guest
Jon Elson <elson@pico-systems.com> wrote:
Be carefull what parts you compare, size, fill factor etc. I do not
think sensl and hamamatsu had different dark current when comparing
similar situations. I found the low breakdown voltage of the sensl
parts handy.
--
Uwe Bonnes bon@elektron.ikp.physik.tu-darmstadt.de
Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt
--------- Tel. 06151 1623569 ------- Fax. 06151 1623305 ---------
On Sat, 31 Aug 2019 10:51:25 -0700, George Herold wrote:
On Friday, August 30, 2019 at 7:27:10 PM UTC-4, John Larkin wrote:
https://www.onsemi.com/products/sensors/silicon-photomultipliers-sipm
Onsemi is not pure gumdrops any more.
Cool, thanks! The dark count rate for the 850 nm ones is pretty bad.)
(2.5 MHz.!)
Hey and stock at DK for ~$50--60 each.
George H.
The Hamamatsu parts are a lot better for dark current, but may be a lot
harder to get. We've been working with their 14160 parts and they work a
lot better. Also, in modest quantities, they are cheaper, and in large
quantity they are WAY cheaper, like $11 each.
Be carefull what parts you compare, size, fill factor etc. I do not
think sensl and hamamatsu had different dark current when comparing
similar situations. I found the low breakdown voltage of the sensl
parts handy.
--
Uwe Bonnes bon@elektron.ikp.physik.tu-darmstadt.de
Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt
--------- Tel. 06151 1623569 ------- Fax. 06151 1623305 ---------
W
Winfield Hill
Guest
George Herold wrote...
Maybe it's not so important to concentrate on the
dark-count specs. Instead look at maximum output-
current specs. E.g., for C-series: 6, 15 and 20mA
for the 1, 3 and 6 mm sensor sizes. Think s/n.
--
Thanks,
- Win
On August 30, 2019, John Larkin wrote:
https://www.onsemi.com/products/sensors/silicon-photomultipliers-sipm
Onsemi is not pure gumdrops any more.
Cool, thanks! The dark count rate for the 850 nm
ones is pretty bad.) (2.5 MHz.!)
Hey and stock at DK for ~$50--60 each.
Maybe it's not so important to concentrate on the
dark-count specs. Instead look at maximum output-
current specs. E.g., for C-series: 6, 15 and 20mA
for the 1, 3 and 6 mm sensor sizes. Think s/n.
--
Thanks,
- Win
Guest
Maybe it's not so important to concentrate on the
 dark-count specs.  Instead look at maximum output-
 current specs.  E.g., for C-series: 6, 15 and 20mA
 for the 1, 3 and 6 mm sensor sizes.  Think s/n.
Depends. In imaging applications such as the SEM cathodoluminescence system I've been posting about, you need megahertz count rates to get a reasonable SNR at an acceptable frame rate, so the dark count rate isn't as much of an issue as in a photon-counting application. However, 2 MHz is a pretty ridiculous false count rate.
A minimally-acceptable image might be 300x300 pixels at an optical SNR of 10 dB. Gathering that in, say, 10 seconds requires 90,000*100/10 = 900k detection events per second. Overcoming a 2-MHz false count rate would increase the frame time by a factor of 10.
Cheers
Phil Hobbs
J
John Larkin
Guest
On 5 Sep 2019 15:02:48 -0700, Winfield Hill <winfieldhill@yahoo.com>
wrote:
It's probably intended for consumer lidar, so it's probably dirt cheap
in volume.
wrote:
George Herold wrote...
On August 30, 2019, John Larkin wrote:
https://www.onsemi.com/products/sensors/silicon-photomultipliers-sipm
Onsemi is not pure gumdrops any more.
Cool, thanks! The dark count rate for the 850 nm
ones is pretty bad.) (2.5 MHz.!)
Hey and stock at DK for ~$50--60 each.
Maybe it's not so important to concentrate on the
dark-count specs. Instead look at maximum output-
current specs. E.g., for C-series: 6, 15 and 20mA
for the 1, 3 and 6 mm sensor sizes. Think s/n.
It's probably intended for consumer lidar, so it's probably dirt cheap
in volume.
G
George Herold
Guest
On Thursday, September 5, 2019 at 4:47:04 PM UTC-4, Jon Elson wrote:
entangled photon experiments... down converted from ~400 nm so
~800 nm detectors.
George H.
The wavelength is important. I'd like to do these correlated and thenOn Sat, 31 Aug 2019 10:51:25 -0700, George Herold wrote:
On Friday, August 30, 2019 at 7:27:10 PM UTC-4, John Larkin wrote:
https://www.onsemi.com/products/sensors/silicon-photomultipliers-sipm
Onsemi is not pure gumdrops any more.
Cool, thanks! The dark count rate for the 850 nm ones is pretty bad.)
(2.5 MHz.!)
Hey and stock at DK for ~$50--60 each.
George H.
The Hamamatsu parts are a lot better for dark current, but may be a lot
harder to get. We've been working with their 14160 parts and they work a
lot better. Also, in modest quantities, they are cheaper, and in large
quantity they are WAY cheaper, like $11 each.
Jon
entangled photon experiments... down converted from ~400 nm so
~800 nm detectors.
George H.
G
George Herold
Guest
On Thursday, September 5, 2019 at 6:02:57 PM UTC-4, Winfield Hill wrote:
correlated photon experiments papers written by physicists,
and they have no idea about signal to noise... and say
all sorts of stupid stuff. It bothers me.
George H.
Yeah Win, let me just say I've been reading a lot ofGeorge Herold wrote...
On August 30, 2019, John Larkin wrote:
https://www.onsemi.com/products/sensors/silicon-photomultipliers-sipm
Onsemi is not pure gumdrops any more.
Cool, thanks! The dark count rate for the 850 nm
ones is pretty bad.) (2.5 MHz.!)
Hey and stock at DK for ~$50--60 each.
Maybe it's not so important to concentrate on the
dark-count specs. Instead look at maximum output-
current specs. E.g., for C-series: 6, 15 and 20mA
for the 1, 3 and 6 mm sensor sizes. Think s/n.
correlated photon experiments papers written by physicists,
and they have no idea about signal to noise... and say
all sorts of stupid stuff. It bothers me.
George H.
--
Thanks,
- Win