Development of ultra-stable lasers for metrology, spectroscopy and imaging
Issued: Tue, 03 Dec 2013 11:28:00 GMT
Pound-Drever-Hall (PDH) locking, developed into a practical technique by our researchers, is the ubiquitous method for the precise frequency control of stable laser systems.
This control is central to laser products from companies such as Toptica and Newport, and has an estimated global annual market in excess of £5M. The PDH stabilisation technique is essential for the operation of the time standards maintained in all of the world’s Governmental Metrological Standards Laboratories (e.g. NPL, NIST, BIPM) and finds applications in inspection tools in the semiconductor industry and deep UV lasers for UV-Raman spectroscopy.