[21a-A205-1~10] 3.14 Silicon photonics and integrated photonics (formerly 3.15)

△ [21a-A205-1] Focusing Cavity-resonator-integrated Guided-mode Resonance Filter Serving both as Laser Mirror and Input Coupler

〇(M2)Keisuke Ozawa¹, Ryohei Ueda¹, Aika Taniguchi¹, Akari Watanabe¹, Shunsuke Teranishi¹, Junichi Inoue¹, Kenji Kintaka², Shogo Ura¹ (1.Kyoto Inst. Tech., 2.AIST)

Keywords:guided-mode resonance, grating, external cavity laser

Focusing cavity-resonator-integrated guided-mode resonance filter (F-CRIGF) consists of a thin-film optical waveguide and a surface grating. F-CRIGF shows narrowband retroreflection for an incident diverging wave from free space. This time, a F-CRIGF which extracts a part of the incident optical power into an external waveguide as a guided wave was designed and fabricated. An external cavity diode laser was constructed by the F-CRIGF and a gain chip. We measured a spectrum of laser oscillation and a power of the extracted guided wave, and demonstrated that the F-CRIGF serves both as laser mirror and waveguide input coupler.