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Phil, I think you had some sensible reason why LDR's show
noise that is above the shot noise... (twice as much??)
Could you remind me?
TIA
George H.
On 04/09/2015 02:45 PM, George Herold wrote:
Phil, I think you had some sensible reason why LDR's show
noise that is above the shot noise... (twice as much??)
Could you remind me?
TIA
George H.
Both generation and recombination are stochastic, so you get
fluctuations on both ends of the carrier lifetime.
Cheers
Phil Hobbs
On 04/09/2015 02:45 PM, George Herold wrote:
Phil, I think you had some sensible reason why LDR's show
noise that is above the shot noise... (twice as much??)
Could you remind me?
TIA
George H.
Both generation and recombination are stochastic, so you get
fluctuations on both ends of the carrier lifetime.
Cheers
Phil Hobbs
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics
160 North State Road #203
Briarcliff Manor NY 10510
hobbs at electrooptical dot net
http://electrooptical.net
On 4/10/2015 8:50 AM, George Herold wrote:
On Thursday, April 9, 2015 at 3:09:08 PM UTC-4, Phil Hobbs wrote:
On 04/09/2015 02:45 PM, George Herold wrote:
Phil, I think you had some sensible reason why LDR's show
noise that is above the shot noise... (twice as much??)
Could you remind me?
TIA
George H.
Both generation and recombination are stochastic, so you get
fluctuations on both ends of the carrier lifetime.
Got it, so twice the shot noise.
Has anyone actually measured this?
I assume so. If you look e.g. in the ERIM Infrared Handbook, you'll see
plots of D* vs wavelength for different detectors. At the top of the
plot, there are two curves marked "Ideal photovoltaic" and "Ideal
photoconductor" that are 3 dB apart.
Cheers
Phil Hobbs
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics
160 North State Road #203
Briarcliff Manor NY 10510
hobbs at electrooptical dot net
http://electrooptical.net
On Thursday, April 9, 2015 at 3:09:08 PM UTC-4, Phil Hobbs wrote:
On 04/09/2015 02:45 PM, George Herold wrote:
Phil, I think you had some sensible reason why LDR's show
noise that is above the shot noise... (twice as much??)
Could you remind me?
TIA
George H.
Both generation and recombination are stochastic, so you get
fluctuations on both ends of the carrier lifetime.
Got it, so twice the shot noise.
Has anyone actually measured this?
On Friday, April 10, 2015 at 9:42:28 AM UTC-4, Phil Hobbs wrote:
On 4/10/2015 8:50 AM, George Herold wrote:
On Thursday, April 9, 2015 at 3:09:08 PM UTC-4, Phil Hobbs wrote:
On 04/09/2015 02:45 PM, George Herold wrote:
Phil, I think you had some sensible reason why LDR's show
noise that is above the shot noise... (twice as much??)
Could you remind me?
TIA
George H.
Both generation and recombination are stochastic, so you get
fluctuations on both ends of the carrier lifetime.
Got it, so twice the shot noise.
Has anyone actually measured this?
I assume so. If you look e.g. in the ERIM Infrared Handbook, you'll see
plots of D* vs wavelength for different detectors. At the top of the
plot, there are two curves marked "Ideal photovoltaic" and "Ideal
photoconductor" that are 3 dB apart.
OK thanks, Is this the handbook?
http://www.amazon.com/The-Infrared-Handbook-William-Wolfe/dp/096035901X
(Certainly not giving it away.)
George H.