Alf Adams

Background

Adams was born to a non-academic family. His grandmother had died from tuberculosis and his father was born with Tuberculosis thus being excused from school on medical grounds, before working as cobbler, boxer and gym owner.

Education

After taking his 11 plus exam he attended the local technical school where he represented Southeast Essex at both football and cricket. He attended University of Leicester to study physics, in part because he didn"t have the foreign language qualifications demanded by most other universities. He also completed his Doctor of Philosophy at Leicester with Professor Walter Eric Spear on Orthorhombic crystal systems, before doing postdoctoral research in Physics at Karlsruhe Institute of Technology in Germany, where he met and married his wife Helga.

Career

Most modern homes will have several of these devices in their homes in all types of electronic equipment. He served as a Distinguished Professor of Physics at the University of Surrey, where he headed the Optoelectronic Materials and Devices Research Group. He is now retired and holds the position of emeritus professor

He was awarded the Duddell Medal and Prize in 1995, and elected as a Fellow of the Royal Society in 1996.

Adams" mother left school at the age of 12. Adams was evacuated from Hadleigh, Essex during The Blitz in World World War World War II Back in Britain at the University of Surrey he conducted microwave research using Gallium arsenide crystals under high pressure.

In 1980 he took a sabbatical to work on semiconductor lasers at the Tokyo Institute of Technology in Japan. After returning to the University of Surrey to continue research.

The genesis of the strained layer laser (aka strained quantum well laser).

He did not patent the idea and so received no financial gain from a technology that is used in virtually every household in the world.

Achievements

• In 1995 he was awarded the Duddell Medal and Prize and in 1996 was elected as a Fellow of the Royal Society. His nomation for the Royal Society reads: Distinguished for his pioneering work on the application of high pressure techniques to the study of semiconducting materials, Professor Adams has done much to advance the use of strain as an important variable in understanding the basic physics of devices. His contributions include the first demonstration of the T-L-X ordering of the conduction band minima in Gallium Arsenide, the first direct observations of scattering by the central cell potential of impurities, the proposal and experimental confirmation of intervalence band absorption as an important loss mechanism in semiconductor lasers and the prediction that the threshold current in a quantum-well laser can be greatly reduced if the wells are grown in a state of compressive stress. These latter ideas are currently being pursued vigorously around the world where they are resulting in lasers having greatly enhanced performance. Since retirement from the University of Surrey he holds the position of emeritus professor In 2014 he was awarded the Rank Prize in Optoelectronics for his pioneering work on strained-layer laser structures. In March 2014 he was the subject of the British Broadcasting Corporation Radio 4 programme, Professor Jim First Rate (at Lloyd's)-Khalili"s The Life Scientific.

Membership

Royal Society.