Theodore Harold Maiman (1927–2007) built the first working laser — and almost nobody saw him coming. In 1960 the race to make coherent light was the glamour event of physics: Bell Labs, Columbia, TRG and half of academia were chasing it with big teams, big budgets and exotic schemes involving caesium vapour and gas discharges. Maiman was a thirty-two-year-old engineer-physicist at Hughes Research Laboratories in Malibu with one assistant, about $50,000, nine months of grudging management approval — and a gain medium the front-runners had publicly declared hopeless. He won anyway, with a crystal of pink ruby the size of a fingertip and a flashlamp out of a photographer's catalogue. It remains one of science's great underdog stories: the field's biggest prize, taken by the smallest team in the race, using the material everyone else had crossed off the list.

The kid who fixed radios

Maiman grew up in Denver, the son of an electrical engineer and inveterate tinkerer who wanted his boy to be a doctor. Ted instead spent his teens repairing radios and appliances for pocket money — by his own account he made better wages fixing electronics at seventeen than most adults in the neighbourhood — and that repairman's instinct for making the thing actually work never left him. He took engineering physics at Colorado, then a Stanford PhD under Willis Lamb (of the Lamb shift), where he built the experimental apparatus for exacting microwave-optical measurements — exactly the blend of quantum physics and soldering-iron pragmatism the laser would demand. At Hughes he made his name shrinking the ruby maser — the laser's microwave-emitting older sibling — from a cryogenic monster into a practical 2.5-kilogram device. So when the race for an "optical maser" began, Maiman knew ruby's quantum mechanics better than almost anyone chasing fancier materials.

May 16, 1960

The experts' case against ruby was a published measurement: its fluorescence efficiency was said to be around one percent, far too feeble for population inversion. Maiman didn't believe it, remeasured, and found the true figure was closer to 75% — the material was fine; the folklore was wrong. His remaining problem was pump light: no continuous lamp was bright enough. The repairman's solution: don't pump continuously. A pulsed xenon flashlamp — the kind photographers used — could be blindingly intense for a millisecond, and a helical one from a General Electric catalogue could wrap right around a ruby rod, silvered at the ends to form the mirrors. On 16 May 1960, Maiman and his assistant Irnee D'Haenens watched the red output spike and narrow as the flash energy crossed threshold: the first coherent light ever made, an idea reaching back to Einstein's 1917 stimulated-emission paper, finally embodied in hardware you could hold in one hand.

Then came the punchlines. Physical Review Letters rejected his announcement — the editor, weary of maser papers, judged it routine — so the first laser was reported in a 300-word note in Nature, which Charles Townes later called perhaps the most important physics paper per word of the century. At the press conference, journalists mostly wanted to know about death rays. And D'Haenens supplied the joke the field would repeat for decades: the laser, he said, was "a solution looking for a problem".

A solution that found its problems

The problems arrived on schedule and have never stopped: fibre-optic communication, barcode scanners, eye surgery, DVD players, gravitational-wave detectors, and — the concern of this Primer's photonics course — the on-chip lasers feeding every silicon photonic chip in every datacenter, each one a descendant of Maiman's three-level ruby pumping trick. Maiman himself left Hughes within a year, irritated that the lab hesitated to commercialise, and founded Korad to build ruby lasers as products — engineer to the end. The honours ledger stayed lopsided: twice nominated for the Nobel Prize, he never received it (the 1964 prize for maser–laser theory went to Townes, Basov and Prokhorov), a sore point he carried with some dignity and, eventually, a memoir pointedly titled The Laser Odyssey. He collected the Japan Prize, the Wolf Prize and membership of both national academies instead — and the unarguable distinction that every laser on Earth, of which there are now roughly one per human, traces its ancestry to a pink crystal that flashed in Malibu one Monday in May 1960.