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Schmidt Cassegrain Telescope Manufacturing EngineerCelestron, Torrance, CA

● Responsible for quality control statistics on mirrors and aspheric corrector○ 8” diameter scopes and larger, thousands sold annually

● Overhauled the primary mirror bonding method to reduce internal stresses○ Partial bonding using surface priming and releasing agents for RTV

● Debugged optical polishing issues○ Spindle polishing and aspherizing

● Investigated solutions to primary mirror angular shift during focal adjustment○ Microsphere lubrication and teflon bushings

Research and Development EngineerEdmund Industrial Optics, Barrington, NJ

• Chemical tempering of RMR lens• Automated reticle surface inspection system for ACOG using LabVIEW• Automation of Optikos image quality system for ENVG objectives and eyepieces• Spindle polishing experience making parabolas for telescopes• Optical filter fabrication experience• Overseas troubleshooting (Singapore, China, Japan)• Acted as the primary technical resource for the quality assurance department

ENVG

ACOG & RMR Spindle polishing

Thin films

Solar Module DeveloperPrism Solar Technologies, Tucson, AZ

• Simulated holographic film in Zemax by creating a DLL that imports RCWA data• Optimized the glass shape for various cell sizes

Rows of holograms between solar cells

Heterodyne InterferometryLaser Power Delivery

JPL, Pasadena, CANASA-sponsored Space Interferometry Mission

The SIM Satellite

B

Field angle (arcsec)

Heterodyne Interferometer

Dual Output NPRO laser

f1

f2

Lock-In Amplifier

Phase difference = distance

LO

Movable retro

Measurement

BeamSplitter

Mirror

Dual Output NPRO Laser

NPRO LaserND:YAG crystal1.319 um

50:50 SM PM Coupler

AOM +df

AOM -df EVOA

Motor Control Electronics

f1

f2

Adaptive Optics DevelopmentUSAFA, Colorado Springs, CO

JTO funded

Adaptive Optics Concept

Holographic Adaptive Laser Optics System (HALOS)

Hologram Construction Hologram Playback

Signal Out = (A-B)/(A+B)

HALOS system construction

HALOS Physical System

HA

LOS

Cor

rect

ed W

avef

ront

0.43 waves RMS 0.16 waves RMS

HALOS Sensor Electronicsx64

SensL APD array

16 coreXMOS chip x4

DigitalData Bus64 channelsIn

put f

rom

hol

ogra

m

Amp

AnalogData Bus32 channels5 V

120V

Deformable Mirror

USB

XTAG

10k refresh rate(fastest in the industry)

19

Current booster circuit (diode driver)Applications:

- Laser diode or LED driver with variable current- Electrolysis current source

Laser or LED inserted here

Drive current: I = V/R

Laser or LED inserted here

20

Microcontroller Experience

XMOS XS1 audio controller Arduino Uno

21

Multiple Projection MicroscopeUniversity of Arizona, Tucson, AZ

NIH grant

Physical System

Illumination Design No. 1 (patented)

Illumination Design No. 2 (patented)

Cell Images

OVCAR: OVCAR-3 P51progressive adenocarcinoma of the ovary

Endoscope Tube Optics

5 mm

Endoscope Mechanical Design

Hologram Recording System

Argon Laser (488 nm)

dz (automated)

pupil position

dA (automated)

dt (automated)

beam splitter

hologram

rotating mirror

Mechanical Switch DriverFor automating the hologram recording process using existing shutter controls

S1 S2 i

L L 0

H L imaxL H -imaxH H N/A

i

Inductor-driven switch (L1) is controlled by a pulse of current (i).

5V supply is regulated externally

S1 & S2 are TTL control signals (0 - 5 V)

This controls dt via a LabVIEW script

39

Optical Coherence MicroscopeUniversity of Arizona, Tucson, AZ

NIH grant

Optical Coherence Microscope

41

AC coupled signal

OCM Electronics Flowchart

42

Set-gain detector

XMultiplier

Local OscillatorTo piezo100 kHz

100 kHz

Low Pass FilterSignal to DAQ

Amplifier

Variable Gain Amplifier

OCM Images

43

Incoherent Imaging Coherent Imaging

Carcinogenic Fibroblasts

Helicopter Landing Pad Illumination Design

Pharos Marine, Houston, TX

Flashlight Reflector Illumination DesignMag Instruments, Ontario, CA

Wide Angle Cell Phone LensBridge Optix, Phoenix, AZ

Bridge Optix CLS

62° field (actual image) 88° field (simulated image)