"raised hand" is correct and can be used in written English.
You can use it when referring to a person raising their hand. For example, "The teacher noticed the raised hand and called on the student."
Ray stilled her with a raised hand.
Later, each raised hand was a cobra, and Ms. Espino was another cobra coiled beneath them.
Lee acknowledged them with a raised hand and a bowed head.
"My other wife," Manyenga said of a woman wincing at Altman's raised hand.
A goddess rules over the scene, accepting tribute with a gracefully raised hand.
If you liked what you heard you fluttered your raised hand.
In the shadows and behind his shades, he looks almost threatening, His raised hand beckons.
Arm raised, hand clenched, he sees it then, clearly: she thinks he's a joke.
Made in Italy, the 20-inch platter is rimmed by raised, hand-painted langoustines, mussels and scallops -- a feast for the eyes.
At the protest in front of Zuma's office, young people raised hand-lettered signs that mocked Zuma as well as placards connecting their demonstration with the struggles of South Africa's past.
The subject under discussion was feminism, and when the tutor asked the feminists present to raise their hands, Tooba's un-raised hand drew attention.
