Surface emitting laser, eyeball-tilt-position detecting device, distance measuring device, display device, and atomic oscillator
AssigneeRicoh Company, Ltd.
InventorRyoichiro Suzuki
Life of this patent
Estimating the term…
Abstract
A surface emitting laser includes an inclined substrate; a first reflecting mirror over the inclined substrate in an emission direction; a resonator over the first reflecting mirror in the emission direction; and a second reflecting mirror over the resonator in the emission direction. The resonator includes: a first spacer layer over the first reflecting mirror in the emission direction; an active layer over the first spacer layer in the emission direction; and a second spacer layer over the active layer in the emission direction. At least one of the first spacer layer or the second spacer layer has compressive strain. The resonator has a net strain of +4.5%·nm or more and +93.6%·nm or less.
Claims10
A surface emitting laser comprising:
- an inclined substrate;
- a first reflecting mirror over the inclined substrate in an emission direction;
- a resonator over the first reflecting mirror in the emission direction;
- and
- a second reflecting mirror over the resonator in the emission direction, wherein:
- the resonator includes:
- a first spacer layer over the first reflecting mirror in the emission direction;
- an active layer over the first spacer layer in the emission direction;
- and
- a second spacer layer over the active layer in the emission direction,
- wherein:
- at least one of the first spacer layer or the second spacer layer has compressive strain, and
- the resonator has a net strain of +4.5%·nm or more and +93.6%·nm or less.
Dependencies are inferred from the claim text.