[15p-K505-9~18] CS.2 Code-sharing Session of 3.10 & 3.13

4:45 PM - 5:00 PM JST(7:45 AM - 8:00 AM UTC)

[15p-K505-13] Evaluation of noise characteristics for 1.5 μm-wavelength InP-based photonic-crystal surface-emitting lasers

〇Takeshi Aoki^1,2, Yuhki Ito^1,2, Kosuke Fujii¹, Rei Tanaka¹, Makoto Ogasawara^1,2, Yusuke Sawada^1,2, Shun Kimura¹, Hiroyuki Yoshinaga^1,2, Naoki Fujiwara^1,2, Hideki Yagi¹, Masaki Yanagisawa¹, Masahiro Yoshida², Takuya Inoue², Menaka De Zoysa², Kenji Ishizaki², Susumu Noda² (1.Sumitomo Electric, 2.Kyoto Univ.)

Keywords:

PCSEL,semiconductor laser diode,InP

We have developed InP-based PCSELs at communication wavelengths (1.3 μm, 1.5 μm) as light sources for optical communications and LiDAR. Recently, we have demonstrated high-power and stable single-mode operation by employing double-lattice photonic-crystals and metal mirror electrodes. For applications such as free-space optical communications and FMCW LiDAR, low relative intensity noise (RIN) and narrow spectral linewidth are essential. Thanks to their large-area coherent resonance, PCSELs are expected to exhibit these desirable characteristics. In this study, we evaluated the RIN spectrum of a 1.5 μm PCSEL under CW operation. In addition, we measured frequency noise spectra to estimate spectral linewidth of the same device.