Holmium lasers passively Q-switched with PbS quantum-dot-doped glasses

Appl Opt. 2006 Jan 20;45(3):536-9. doi: 10.1364/ao.45.000536.

Abstract

PbS quantum-dot-doped glasses are demonstrated as saturable absorber Q-switches for 2 microm holmium lasers. Q-switched pulses from Ho3+:Y3Sc2Al3O12 and Ho3+:Y3Al5O12 lasers of 50 and 70 ns in duration, respectively, have been obtained demonstrating up to 13% of energy conversion efficiency from free-running to Q-switched output.