Discussion:
Mach-Zehnder (MZ)
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g***@gmail.com
2017-03-23 13:38:15 UTC
Permalink
Hi all, I've had a question from a customer about an experiment we do with the MZ
interferometer. We put a Rubidium cell in one arm and measure the phase shift with
absorption. A write up here.
https://www.dropbox.com/s/lbqokhvbhup85ah/4-2%20DLS%20ResFaradayRot%20Caltech09.pdf?dl=0
Done by guys at Caltech.
Anyway you can take the output from either side of the output beam-splitter.
The question: Is there anything to be learned from looking at both
complimentary outputs?
My response was not really, if you had a weak signal you could get a
bit more by subtracting the two outputs. But that's all I know of.

I told the customer I'd ask if there are any other uses.
Are there?

Thanks,
George H.
Phil Hobbs
2017-03-23 15:15:37 UTC
Permalink
Post by g***@gmail.com
Hi all, I've had a question from a customer about an experiment we do with the MZ
interferometer. We put a Rubidium cell in one arm and measure the phase shift with
absorption. A write up here.
https://www.dropbox.com/s/lbqokhvbhup85ah/4-2%20DLS%20ResFaradayRot%20Caltech09.pdf?dl=0
Done by guys at Caltech.
Anyway you can take the output from either side of the output beam-splitter.
The question: Is there anything to be learned from looking at both
complimentary outputs?
My response was not really, if you had a weak signal you could get a
bit more by subtracting the two outputs. But that's all I know of.
I told the customer I'd ask if there are any other uses.
Are there?
Thanks,
George H.
You can get amplitude and phase that way--amplitude from P1+P2 and phase
from P1-P2.

You can do noise cancellation using a sample of the laser.

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
g***@gmail.com
2017-03-23 16:26:49 UTC
Permalink
Post by Phil Hobbs
Post by g***@gmail.com
Hi all, I've had a question from a customer about an experiment we do with the MZ
interferometer. We put a Rubidium cell in one arm and measure the phase shift with
absorption. A write up here.
https://www.dropbox.com/s/lbqokhvbhup85ah/4-2%20DLS%20ResFaradayRot%20Caltech09.pdf?dl=0
Done by guys at Caltech.
Anyway you can take the output from either side of the output beam-splitter.
The question: Is there anything to be learned from looking at both
complimentary outputs?
My response was not really, if you had a weak signal you could get a
bit more by subtracting the two outputs. But that's all I know of.
I told the customer I'd ask if there are any other uses.
Are there?
Thanks,
George H.
You can get amplitude and phase that way--amplitude from P1+P2 and phase
from P1-P2.
Oh Good! I'll pass that on.

George H.
Post by Phil Hobbs
You can do noise cancellation using a sample of the laser.
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
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