1. Optical Technologies for Challenging Environments

2. Talk Outline Precision Optics Optical Coating Glass Engineering Assembly and Bonding Technologies Optical Fibre Components and Assemblies Acousto-optics Environmental Performance

3. Gooch & Housego: a Global Business Geographical revenues: 2010 2009 US50%60% Asia Pacific20%13% Europe30%27% 86% of sales outside the UK Revenue by currency: USD 72% GBP 21% Euro 7% Headcount: >500 Global locations 8 manufacturing facilities (6 US, 2 UK) 2 R&D centres 6 Sales Offices

4. Components & Materials & Systems G & H is a global supplier of precision optical components & sub- assemblies –Acousto-optics –Electro-optics –Crystal Optics –Fibre Optics –Precision Optics Gooch and Housego is a global supplier of optical instrumentation –Hyper-spectral imaging –Optical coherence tomography –Spectroradiometers

5. Precision Optics Crystal Optics –Birefringent filters & waveplates –Rotators & depolarisers –UV through to visible wavelengths –Infra-red crystals grown in-house Prisms Windows Lenses

6. Super-polished substrates Low scatter mirrors Synchrotron Mirrors (Si) EUV Mirrors Precision Etalons Sapphire Windows (8”) Precision Polished Si Wafers Flow Cells Zerodur, fused silica, silicon, silicon carbide, sapphire, Pyrex, BK7, filter glass Up to 18” parts Super-polishing

7. Roughness = 1.9 Å Very good polish Roughness = 0.5 Å Superpolish Commercial polish Roughness = 5 Å All images taken with 132X Nomarski microscope Proprietary Process on custom equipment Surface roughness <1Å Surfaces have extremely low scatter <5ppm Roughness = 0.2 A Beyond superpolishing

8. Large high quality mirrors Mirror substrates – very low scatter Sizes: 13.5” dia x 6” thick, down to 3” dia x 1” thick Up to 18” possible

9. 20 Chambers across three sites Coating Technology Resistance Source E-beam Gun Ion-assisted E-beam Ion-beam Sputtering Sol-Gel Typical Chamber sizes Bell Jar -12” to 18” Box Coater -500mm to 1000mm Sol Gel Baths -parts up to 1m, 150kg Optical Coating Technologies

10. AR – V, W, multiband and broadband Wavelengths 250nm – 16um high laser damage threshold (up to 3GW/cm 2 20ns pulses 1064nm) HR – ultra-high reflectivity, low scatter Beamsplitters Edge Filters, Short pass, Long pass, Band pass Polarising filters Custom Dielectric Filter Dielectric Materials -TiO 2, SiO 2, Ta 2 O 5, HfO 2, ZrO 2, Nb2O5, Al 2 0 3, MgF 2 SiC etc. Metallic Materials – Cr, Ag, Au, Al, Ni, Pt, Si, Rh Optical Coating Types

11. Solgel Coatings

12. Materials Optical & soda glass Glass ceramic Fused silica & crystal quartz Ruby, sapphire, YAG etc Ferrite and alumina ceramics Processes Multi-axis CNC machining Shaping, drilling & honing Grinding & polishing Flat, Cylindrical, Spherical Glass Engineering

14. Cleaning of Substrates Variety of techniques chosen to suit particular substrates Automated aqueous multistage cleaners Proprietary spinner cleaning Solvent vapour degreasing Manual wiping with dry high purity chemicals Custom designed jigging

15. Extensive cleanrooms and laminar flow cabinets Optical contacting Cold metal bonding Adhesive free bonding Sol-gel bonding Low outgassing epoxies Paints Mechanical assemblies Custom design Optical Assembly and Bonding Technologies

16. Passive Fibre Optics Fused fibre optical branching components –Wavelength combining –Power combining –Tap coupler/splitter Photonic packaging capability –Fibre coupled sources –Fibre coupled detectors Fibre optic module capability –Optical sub-assemblies

17. Active Fibre Optics Singlemode Pump lasers Multimode Pump lasers Transmission lasers Integrated Modules High Speed Detectors Acousto-Optic Modulators Ruggedised Telcordia and MIL-STD-883 and space qualified products

18. Photonic Packaging Fibre pigtailed, recepticalized & free space sources –Lasers & LEDs –SLEDs & SOAs –DFB, FP & VSELs Fibre pigtailed & recepticalized detectors –APDs & PIN diodes –Arrays –High powered fibre collimators Micro-optic devices –Thin film devices –Isolators –Fibre coupled AO Fibre coupled Isolator

19. Low phase noise vs temperature No electromagnetic emissions Low weight and good flexibility Splitter module based of concatenated fused couplers Fibre optic harness for SMOS Mission

20. SMOS Satellite Soil Moisture Ocean Salinity

21. Case Study – Fibre Optic Gyroscopes G & H Torquay is a key supplier of gyro coupler EM4 is a key supplier of gyro sources Both supply Honeywell, G & H Torquay achieving this despite ITAR and working through a TAA Next major programme is an upgrade of the GPS satellites that are used extensively for many global applications

22. Regular Telcordia qualification (over 1 million components in the field) – 1221 & 1209 Harsh Environment testing –Military & avionic requirements Customer specific testing programmes –Sub-marine cable customers (outgassing & Gamma radiation) –Avionic gyroscope customers –Satellite customers –Military customers FIT rate <1 (1 FIT is 1x10E9 hours) ISO9001 AS9100 & SC21 Reliability Submarine repeaters

23. Acousto-optics World leader in acousto-optic Q-switches Space qualified Acousto optic modulators UV Acousto-optic Tunable Filter for Altius payload Acousto-optic Frequency shifters for Lisa Pathfinder

24. Customers

25. Quality & Assurance ISO 9001 AS 9100 ---- SC21