Coherent Corp. manufactures optical specialty materials, crystals, optics, lasers and laser machines for industrial, communications and instrumentation applications.
Coherent Corp.
Saxonburg, PA (Headquarters) · Santa Clara, CA · Sherman, TXNew on Amplifa
About Coherent Corp.
Coherent Corp. (formerly II-VI Incorporated) is a US manufacturer of materials, networks and lasers headquartered in Saxonburg, Pennsylvania. The company produces optical bulk materials such as zinc selenide (ZnSe), zinc sulfide (ZnS), CVD diamond, gallium arsenide, germanium and lithium niobate wafers as well as laser gain and nonlinear crystals (Nd:YAG, BBO, LBO, KTP). Through vertical integration, Coherent covers the entire value chain: from crystal growth to optical fabrication and coating through to the assembly of optomechanical assemblies. In the field of industrial material processing, the company manufactures laser cutting, laser drilling, laser marking, laser welding and UV laser systems for applications ranging from small repair shops to high-volume production. Further manufacturing competencies include reaction-bonded high-performance ceramics and metal matrix composites (including silicon carbide, boron carbide), thermoelectric components based on bismuth telluride, the recovery of scandium using the patented Selective Ion Recovery process, and the production of aluminum-scandium alloys on its own alloying plant. Customer industries include datacenters and communications, industrial material processing, semiconductor and display manufacturing equipment, automotive and energy, instrumentation, fusion energy as well as aerospace. Coherent maintains R&D, production, sales and service facilities at approximately 130 locations in more than 20
- Site
- Santa Clara, CA
- Processes
- Laser cutting, Laser drilling, Laser marking, Laser engraving, Laser welding, Laser ablation, Laser scribing, Laser annealing
- Materials
- CVD diamond (PCD and single crystal), Gallium arsenide (GaAs), Germanium (Ge), Lithium niobate (wafers), Zinc selenide (ZnSe), Zinc sulfide (ZnS), Zinc sulfide multispectral (ZnS MS), Sapphire
- Certificates
- 100% inspection, Metrology, HALT/HASS, ISO certificates
- Founded
- 1971
- Employees
- 26.622
- Industries
- Datacenter & communications, Industrial material processing, Semiconductor & display manufacturing equipment, Automotive & energy (EV), Instrumentation (research, OEM, medical, dental), Fusion energy
- 01
Material growth (crystal growth)
- 02
Optical fabrication
- 03
Coating
- 04
Assembly of optomechanical assemblies
- 05
Metrology & 100% inspection
- 06
Laser machine and system manufacturing
Locations
Saxonburg, Pennsylvania
USHeadquarters
- Materials
- ZnSe, optical specialty materials
- Laser machine and system manufacturing
- Optical fabrication
- Material growth
Santa Clara, CA
USSite
Sherman, TX
USManufacturing site (modernization/expansion planned, CHIPS Act)
Products & Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Laser cuttingMachining | – | – | – | – | Metals, Plastics, Composites, Paper, Ceramics |
| Laser drillingMachining | – | – | – | – | Metals, Plastics, Composites, Paper, Ceramics |
| Laser markingSurface | – | – | – | – | Metals, Plastics |
| Laser engravingSurface | – | – | – | – | Metals, Plastics |
| Laser weldingJoining | – | – | – | – | Plastics, Metals |
| Laser ablationSurface | – | – | – | – | Metals, Plastics |
| Laser scribingSurface | – | – | – | – | Metals |
| Laser annealingHeat treatment | – | – | – | – | Metals |
| Coating of optical componentsSurface | – | – | – | – | Optical specialty materials |
| Optical fabrication (manufacture of optics)Engineering | – | – | – | – | ZnSe, ZnS, Diamond, Sapphire, GaAs, Ge, LiNbO3 |
| Assembly of optomechanical assembliesAssembly | – | – | – | – | Optical components |
| Material growth (crystal growth of optical specialty materials)Engineering | – | – | – | – | Zinc selenide, Zinc sulfide, Diamond, Sapphire, Nd:YAG, BBO, LBO, KTP |
| Metrology / 100% inspection of optical productsTesting | – | – | – | – | – |
| Manufacture of reaction-bonded high-performance ceramics and metal matrix compositesCasting | – | – | – | – | Silicon carbide ceramics, Metal matrix composites, Boron carbide |
| Scandium recovery (Selective Ion Recovery, SIR)Engineering | – | – | – | – | Scandium, Scandium oxide (99.9%) |
| Aluminum-scandium alloy production (alloying plant)Casting | – | – | – | – | Aluminum-scandium alloys (5000 series Al-Mg) |
5 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Laser cutting and drilling machines | Coherent | – | – | – | – |
| Laser marking and engraving machines (desktop systems to fully automated with robotic | Coherent | – | – | – | – |
| Laser welding machines (handheld welding lasers to fully automated) | Coherent | – | – | – | – |
| UV laser systems (configured for LTPS, LLO, LIFT, PLD, LA-ICP-MS) | Coherent | – | – | – | – |
| Integrated spectroscopy systems (Raman) | Coherent | – | – | – | – |
Additional services
Reference customers
Quality
Coherent maintains an intensive and comprehensive quality assurance program that provides for 100% inspection of every optic and optomechanical assembly. The intensive metrology captures all critical parameters with state-of-the-art tools; a HALT/HASS program for reliability testing of lasers complements the quality assurance.
| Evidence | Saxonburg, Pennsylvania |
|---|---|
| 100% inspection | |
| Metrology | |
| HALT/HASS | |
| ISO certificates |
History
- 1971
Founded as II-VI Incorporated by Carl Johnson and James Hawkey; began with cadmium telluride for CO2 lasers.
- 1987
Initial public offering (IPO); expansion of zinc selenide capacity.
- 1995
Acquisition of Virgo Optics.
- 1996
Acquisition of Lightning Optical Corporation; establishment of the VLOC division.
- 2004
Acquisition of Marlow Industries.
- 2007
Acquisition of 75% of HIGHYAG Lasertechnologie GmbH (Kleinmachnow).
- 2013
Acquisition of the remaining 25% of HIGHYAG.
- 2019
Acquisition of Finisar Corporation.
- 2022
II-VI acquires Coherent, Inc. and is renamed Coherent Corp.
- 2024
Jim Anderson becomes CEO (June 2024).