Experimental Design and Implementation of a MachZehnder Interferometer

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Experimental Design and Implementation of a Mach-Zehnder Interferometer By Alfonso Mares Mentor: Beverley Mc.

Experimental Design and Implementation of a Mach-Zehnder Interferometer By Alfonso Mares Mentor: Beverley Mc. Keon Co-Mentor: David Huynh 1

Motivation • Reduction of skin friction drag • Compliant surfaces Picture credit: http: //www.

Motivation • Reduction of skin friction drag • Compliant surfaces Picture credit: http: //www. dominikschmidt. net/2010/11/ftir-compliant-surface-tutorial/ 2

Experiment idea Flow 3

Experiment idea Flow 3

What is an Interferometer? • Optical technique for small distances • Advantages –Able to

What is an Interferometer? • Optical technique for small distances • Advantages –Able to measure small quantities –Non-invasive • Examples –LIGO (Laser Interferometer Gravitational-Wave Observatory) –LISA (Laser Interferometer Space Antenna) 2034 4

Interference Pattern Circular Lined Picture Credit: bhttp: //web. physics. ucsb. edu Picture Credit: http:

Interference Pattern Circular Lined Picture Credit: bhttp: //web. physics. ucsb. edu Picture Credit: http: //practicalphysics. org 5

Design Process: Stage 1 • Mach-Zehnder –Laser diode – 3 mirrors – 2 beam

Design Process: Stage 1 • Mach-Zehnder –Laser diode – 3 mirrors – 2 beam splitters • Issues –Coherence length 6

Stage 1 M 3 M 2 BS 1 L 7

Stage 1 M 3 M 2 BS 1 L 7

Design Process: Stage 2 • Michelson – 2 mirrors – 1 beam splitter –

Design Process: Stage 2 • Michelson – 2 mirrors – 1 beam splitter – 1 He. Ne laser • Issues –Beam splitter degree of freedom 8

Stage 2: Michelson M 1 M 2 BS 1 L 9

Stage 2: Michelson M 1 M 2 BS 1 L 9

Design Process: Stage 3 • Modified Michelson v 1 – 2 mirrors – 1

Design Process: Stage 3 • Modified Michelson v 1 – 2 mirrors – 1 beam splitter(Plus degree of freedom) – 1 He. Ne laser • Issues –Slight tilt –Reflections 10

Stage 3: Michelson v 1 M 1 BS 1 M 2 11

Stage 3: Michelson v 1 M 1 BS 1 M 2 11

Interference Pattern Images 12

Interference Pattern Images 12

Design Process: Stage 4 • Modified Michelson v 2 – 2 mirrors (tilted) –

Design Process: Stage 4 • Modified Michelson v 2 – 2 mirrors (tilted) – 1 beam splitter (degree of freedom) – 1 He. Ne laser –Samples bought – 1 high-speed camera • Issues –Vibrations 13

Design Process: Stage 4 • Samples(must be clear) – Glass – Acrylic Place pictures

Design Process: Stage 4 • Samples(must be clear) – Glass – Acrylic Place pictures here 14

Stage 4: Michelson v 2 BS 1 M 1 S M 2 15

Stage 4: Michelson v 2 BS 1 M 1 S M 2 15

Interference Pattern Without Sample ● Recorded: 3600 fps ● 1024 x 1024 ● Slowed

Interference Pattern Without Sample ● Recorded: 3600 fps ● 1024 x 1024 ● Slowed down by 30 fps 16

Interference Pattern With Samples Glass video here 17

Interference Pattern With Samples Glass video here 17

Future Work/Stage 5 • Michelson v 3 –Reduce the vibrations • Move to Mach-Zenhdner

Future Work/Stage 5 • Michelson v 3 –Reduce the vibrations • Move to Mach-Zenhdner –Set up in NOAH water tunnel 18

Outcomes 19

Outcomes 19

Acknowledgements • • • Base-11 Professor Beverley Mc. Keon David Huynh Mc. Keon Research

Acknowledgements • • • Base-11 Professor Beverley Mc. Keon David Huynh Mc. Keon Research Group Dr. Michael Mello SFP Office 20

Thank You! Questions? 21

Thank You! Questions? 21

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