Memorial service May 20
for Arthur Schawlow, laser co-inventor
BY DAVID F. SALISBURY
A memorial service will be
held at 2 p.m. Thursday, May 20, in Memorial Church for
Arthur L. Schawlow, a.k.a. The Laser Man, who died April
28 at Stanford Hospital from pneumonia and congestive
heart failure after a prolonged battle with leukemia. He
was 77.
An emeritus physics
professor at Stanford, Schawlow picked up the nickname of
Laser Man because he gave a number of popular
demonstrations of the new tool that he had helped to
invent. In one of his favorite demonstrations, he used a
ray gun laser to shoot through a transparent
balloon to pop a dark Mickey Mouse balloon inside without
damaging the outer balloon in order to illustrate the
lasers selectivity.
With these exhibitions,
Schawlow demonstrated two aspects of his character: the
serious scientist, who never lost his interest in how
matter behaves and in ways to make it behave differently,
and a deeply caring person with an irrepressible sense of
humor.
Related
Information:
Through the invention of
the laser, Schawlow and his co-inventor Charles H.
Townes, professor emeritus of physics at the University
of California-Berkeley, have had a major impact on a wide
range of scientific disciplines. Although dubbed a
technology in search of an application when it was
invented, lasers have played an essential role in
scientific studies ranging from physics to geology to
microbiology. At the same time, lasers have found a host
of commercial applications, ranging from surveying to CD
music players, from welding detached retinas back into
the eye to moving tremendous amounts of data across
country via optical fiber.
Schawlow was born in Mount
Vernon, New York on May 5, 1921. His mother was Canadian,
and at her urging the family moved to Toronto a few years
later. As a boy, he was interested in scientific things
-- electrical, mechanical, or astronomical -- and read
nearly everything that the local library could provide on
these subjects. He intended to go to the University of
Toronto to study radio engineering, but he graduated from
high school in 1937, the depths of the depression, and
his family couldn't afford the tuition. It was only by
obtaining a scholarship in mathematics and physics that
he was able to attend the university.
Long time friend and
colleague, Boris Stoicheff, met Schawlow in 1948 at
Toronto. Schawlow had begun his graduate studies and was
running an atomic beam spectroscopy experiment in the
basement of a campus laboratory. In an introduction to an
oral history of Schawlow's life, Stoicheff, who joined
the faculty at the University of Toronto, writes,
"It was a special pleasure to visit the basement
lab, where often in the evenings Art would be serenading
his atomic beam with the clarinet, which he played
reasonably well." His repertoire consisted mostly of
Dixieland jazz, and he had a large collection of jazz
records. As his career progressed, Schawlow continued to
devote his evenings to music halls and jazz concerts
while attending scientific conferences in various cities.
After obtaining his
graduate degree at Toronto, a post doctoral fellowship
took Schawlow to Columbia University to work with Charles
H. Townes, an established leader in the field of
microwave spectroscopy. "It has been an enormous
privilege to have known Art and work with him,"
Townes said last year at a symposium honoring his
colleague. "I appreciate him as a fantastically good
scientist, and a friend, and mostly as a person."
Arthur
Schawlow used to entertain students and other audiences
by shooting a beam through a transparent balloon to pop
the dark Mickey Mouse balloon inside. The demonstration
showed that the laser coould be tuned to pass through the
transparent outer balloon without burning it.
Townes had intended to
keep Schawlow at Columbia, but the young physicist
"double-crossed" him by marrying his youngest
sister, Aurelia, in 1951. The university's anti-nepotism
rules kept him from hiring his brother-in-law, so
Schawlow got a job as a physicist at Bell Telephone
Laboratories, where he began studying superconductivity.
On the weekends Schawlow
continued to work with Townes on a book on microwave
spectroscopy that they had started while he was at
Columbia. Townes had invented the maser, a device that
creates coherent beams of microwaves work for which he
subsequently won the Nobel prize. The two were trying to
extend the basic principle of the maser to optical
wavelengths, when Schawlow got the idea of using a long
chamber with a mirror at each end. The two published
their design in 1957, which set off an intense scientific
competition to produce the first actual laser, which was
built in 1960.
Schawlow and Townes
received a patent for the laser in 1960, but they never
profited from it because Schawlow was working for Bell
Labs and Townes was a Bell Labs consultant at the time.
In 1961 Schawlow joined
the physics department at Stanford, where he continued
his research in the fields of optical and microwave
spectroscopy, superconductivity, lasers, and laser
spectroscopy. In 1981, he received a Nobel Prize for
Physics for "his contribution to the development of
laser spectroscopy."
At Stanford, Schawlow had
a major influence on a number of young scientists. He
gathered about him a large group of students, and a
steady stream of distinguished visitors. "His
students enjoyed the fatherly advice given with Art's
usual sense of humor and understanding," Stoicheff
said. Some examples are: "To do successful research,
you don't need to know everything, you just need to know
of one thing that isn't known;" and "Anything
worth doing is worth doing twice, the first time quick
and dirty, and the second time the best way you
can."
Stanford physicist and
Nobel laureate Steven Chu reports visiting a physics
laboratory where a resident had posted "The Sayings
of Art Schawlow" on his wall. Schawlow is someone
who managed "to keep the humanity in science,"
Chu said.
When reporters and science
fiction writers began speculating about the use of lasers
as death rays, Schawlow taped a particularly lurid
poster, with the title "The Incredible Laser,"
on his laboratory door after adding his own subtitle,
"For credible laser see inside."
One of the reasons that
Schawlow chose Stanford had nothing to do with his
scientific career. His son, Artie, had autism and a
special center for handicapped children, called the
Peninsula Children's Center, provided a nearby place for
him to go.
While attending the Nobel
award ceremony in Stockholm, the Schawlows heard of a
technique for treating autism called "facilitated
communication." This involves using a hand-held
communicator and a special calculator designed to improve
communications with autistic individuals. They tried it
with their son and felt it helped. So they became
champions of the technique and were largely responsible
for introducing it to the United States, where it remains
controversial.
The Schawlows later helped
to organize a nonprofit corporation, California
Vocations, to provide a group home for autistic people. A
further tragedy was the death of Aurelia in 1991, who was
killed in an automobile accident while on her way to
visit their son.
Schawlow is survived by
his son, Artie Schawlow of Paradise Calif., and two
daughters Helen Johnson of Stevens Point, Wisconsin
and Edie Dwan of Charlotte, North Carolina and five
grandchildren, Thomasina and Cleo Johnson and Colin,
Rachel and Andy Dwan.
Donations may be sent to
the Arthur Schawlow Center, 1629 Cypress Lane, Paradise,
CA 95969.SR
|