| 摘要 |
<p>Provided is a laser structure for reducing the influence of a concavoconvex structure on laser characteristics when the ELO method is applied to photonic crystal surface-emitting laser. The laser structure includes a first layer, a second layer, a mask structure, a fourth layer, and photonic crystals. The optical thickness of the mask structure is not an integral multiple of half the oscillation wavelength ?. The reflectance at the time of a laser beam being incident on, from the side of the fourth layer, a laminated structure including the first layer, the second layer, the mask structure, and the fourth layer is lower than the reflectance at the interface between the second layer and the first layer.</p> |
