Sivers IMA Holdings AB confirms that their wholly-owned subsidiary CST Global, UK’s leading, independent, III-V opto-electronic, semiconductor foundry is a participant member of the ‘VCSELs for miniature atomic clocks’ (MacV), government-funded, research project, receiving a grant of £202,056.

CST Global is producing a single mode VCSEL as part of the development of a commercially viable, mass produced, coherent population trapping (CPT) – based, miniature quantum atomic clock. The MacV atomic clock measures the vibration of a Caesium ion, which is very stable when excited by light, making the atomic clock accurate. The CST Global VCSEL produces light at a wavelength of 894nm, to match the resonance of the Caesium ion, for high accuracy.

For more information about the MacV project, please read the attached press release.

For more information: 
Anders Storm, CEO 
Tel: +46 70 262 6390 
E-mail: [email protected]  

This information is insider information that Sivers IMA is obliged to make public pursuant to the EU Market Abuse Regulation. The information was submitted for publication trough the agency of the contact person set out above, on September 19, 2017.


Sivers IMA Holding AB is a leading and internationally renowned supplier, publicly traded under SIVE. The wholly owned subsidiaries Sivers IMA and CST Global develop, manufacture and sell cutting-edge chips, components, modules and subsystems based on proprietary advanced semiconductor technology in microwave, millimeter wave and optical semiconductors. Headquarters in Stockholm, Sweden. Learn more at

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