Galvanometers (See Scanners, Galvanometric)

Gas Analyzers (See Analyzers, Gas)

Gas Chromatographs (3 companies)

Gas Handling Equipment (31 companies)

Gas Leak Detectors (See Leak Detectors)

Gas Purification Services (5 companies)

Gas Recycling and Cleaning Equipment (7 companies)

Gas Storage Equipment (5 companies)

Gases for Lasers (9 companies)

Gases for Optical Applications (6 companies)

Gases, Chemical Vapor Deposition (See Chemical Vapor Deposition Materials)

Gauges, Fiber Optic (See Fiber Optic Gauges and Masters)

Gauges, Film Thickness (See Film Thickness Gauges)

Gauges, Height, Optical (13 companies)

Gauges, Ionization (6 companies)

Gauges, Strain Measurement, Optical (11 companies)

Gauges, Thickness, Optical (15 companies)

Gauges, Vacuum (See Vacuum Gauges)

Gels (See Fiber Optic Filling Compounds; Optical Materials; Refractive Index Gels)

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Generators, Character (See Laser Systems, Character Generation)

Generators, Digital Delay (13 companies)

Generators, Fiber Optic Signal (See Fiber Optic Signal Generators)

Generators, Harmonic (See Harmonic Generators)

Generators, Image (See Video Generators)

Generators, Light Pulse (7 companies)

Generators, Pattern (See Pattern Generators)

Generators, Pulse--General-Purpose (12 companies)

Generators, Pulse--High-Voltage (18 companies)

Generators, Signal (See Fiber Optic Signal Generators)

Generators, Video (See Video Generators)

Germanium (See Crystals, Germanium; Infrared Materials; Optical Materials)

Getters (2 companies)

Gimbals (10 companies)

Gimbals, Stabilized (6 companies)

Glass Blowing Services (6 companies)

Glass Cells (See Cells, Glass)

Glass Ceramics (27 companies)

Glass Components and Subassemblies (61 companies)

Glass Tubing (25 companies)

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Glass, Acousto-Optic (3 companies)

Glass, Blown (1 company)

Glass, Infrared (17 companies)

Glass, Laser (10 companies)

Glass, Magneto-Optic (2 companies)

Glass, Optical (59 companies) (See also Optical Materials)

Glass, Porous (2 companies)

Glass, Scintillator (2 companies)

Glass-to-Metal Seals (See Seals)

Glassworking Equipment (10 companies)

Gloves and Finger Cots (See Cleanroom Equipment; Laboratory Instruments and Supplies)

Goggles and Glasses, Safety Eyewear (30 companies) (See also Laser Safety Eyewear)

Golay Cells (See Detectors, Infrared)

Goniometers (16 companies)

Graphic Arts Equipment (2 companies) (See also Cameras, Graphic Arts; Laser Systems, Graphic Arts)

Graphics, Computer (See Computer Graphics Equipment and Systems; Computer Plotters for Graphic Printout)

Graticules (See Reticles)

Grating Substrates (See Substrates)

Gratings, Blazed (18 companies)

Gratings, Diffraction (40 companies)

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Gratings, Echelon (5 companies)

Gratings, Fiber Bragg (19 companies)

Gratings, Holographic (34 companies)

Gratings, Laser (15 companies)

Gratings, Lithography (13 companies)

Gratings, Radial (5 companies)

Gratings, Replica (15 companies)

Gratings, Ronchi (17 companies)

Grinding and Polishing Machinery (45 companies) (See also Diamond Tools and Machining Equipment; Tools and Machinery)

Grinding and Polishing Materials (See Abrasives; Coating Materials; Pitch Polishing Compounds; Polishing Compounds)

Guidance Systems (8 companies) (See also Infrared Control Systems; Laser Systems, Ranging, Navigation and Tracking; Robot Guidance Systems)

Gunsights, Optical (18 companies)

Gyroscopes, Fiber Optic (See Fiber Optic Gyroscopes)

Gyroscopes, Ring-Laser (2 companies)