Reduced temperature sensitivity of the wavelength of a diode laser in a stress-engineered hydrostatic package

By using the effects of increasing hydrostatic pressure to counteract the effects of rising temperature, we demonstrate a technique to stabilize the wavelength of an uncooled diode laser. We use the differential thermal expansion between various materials incorporated into the laser package to automatically generate a temperature-dependent pressure, and obtain a 50% reduction in the temperature sensitivity of the wavelength of a 1.55 mu m GaInAsP/InP laser. (C) 1996 American Institute of Physics.