| abstract |
[PROBLEMS] To change a refractive index of a material by a simple method, and to obtain a sufficiently large difference in the changed refractive index, and furthermore, to obtain a stable refractive index pattern or optical element regardless of the subsequent use conditions. To provide a radiation-sensitive, refractive-index-changing composition capable of providing a material. SOLUTION: The radiation-sensitive composition contains (A) a decomposable compound, (B) a non-decomposable compound having a higher refractive index than the decomposable compound (A), (C) a radiation-sensitive decomposer, and (D) a stabilizer. Refractive index changing composition. By irradiating this composition with radiation through a pattern mask, the above components (C) and (A) of the irradiated part are decomposed, and the difference in refractive index between the irradiated part and the unirradiated part is obtained. And a pattern having a different refractive index is formed. |