Three scientists yesterday won the Nobel Prize in Physics, including the first woman in 55 years, for inventing optical lasers that have paved the way for advanced precision instruments used in corrective eye surgery, the jury said.
Arthur Ashkin of the US won one-half of the 2 million Swedish kronor (US$222,240) prize, while Gerard Mourou of France and Donna Strickland of Canada shared the other half.
Strickland is just the third woman to win a Nobel Prize in Physics since it was first awarded in 1901, while Ashkin, 96, is the oldest person to win a Nobel, beating out Leonid Hurwicz of the US, who was 90 when he won the 2007 economics prize.
Photo: EPA
Ashkin was honored for his invention of “optical tweezers” that grab particles, atoms, viruses and other living cells with their laser beam fingers.
With this he was able to use the radiation pressure of light to move physical objects, “an old dream of science fiction,” the Royal Swedish Academy of Sciences said.
A major breakthrough came in 1987 when Ashkin used the tweezers to capture living bacteria without harming them, it said.
Ashkin made his discovery while working at AT&T Bell Laboratories from 1952 to 1991.
Mourou, 74, and Strickland won for helping develop a method to generate ultrashort optical pulses, “the shortest and most intense laser pulses ever created by mankind,” the jury said.
Their technique is now used in corrective eye surgery.
Mourou was affiliated with the Ecole Polytechnique of France and the University of Michigan in the US, while Strickland, his student, is a professor at the University of Waterloo in Canada.
Mourou was also involved in building the Extreme Light Infrastructure (ELI) project and what is believed to be one of the world’s most powerful lasers, the Apollon, in developments that researchers hope will one day help deal with nuclear waste, treating tumors and clearing debris in space.
Speaking by telephone to the academy, a moved Strickland said she was thrilled to receive the Nobel prize that has been the least accessible for women.
“We need to celebrate women physicists because they’re out there... I’m honored to be one of those women,” she said.
Before her, only Marie Curie and Maria Goeppert Mayer had won the physics prize, in 1903 and 1963 respectively.
The academy has in the past lamented the small number of women laureates in the science fields in general.
It has said that it is not due to male chauvinism bias on the award committees, instead attributing it to the fact that laboratory doors were closed to women for so long.
“It’s a small percentage for sure, that’s why we are taking measures to encourage more nominations because we don’t want to miss anyone,” academy head Goran Hansson said yesterday.
Last year, US astrophysicists Barry Barish, Kip Thorne and Rainer Weiss won the physics prize for the discovery of gravitational waves, predicted by Albert Einstein a century ago as part of his theory of general relativity.
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