Dependence of threshold current and linearity on Bragg wavelength for grating-surface-emitting lasers
Abstract
We report on a systematic experimental study of the dependence of the threshold current and power-current linearity on the detuning of the Bragg wavelength from the gain peak for grating-surface-emitting lasers. Minimum threshold currents were obtained for lasers emitting at wavelengths 2 to 9 nm on the long wavelength side of the gain peak, depending on the cavity length. Threshold currents as low as 98 A/sq. cm were obtained at the optimum Bragg wavelength. A strong dependence of the linearity on the detuning was found and the lasers showed good linearity at the wavelengths yielding optimum low threshold currents.
- Publication:
-
IEEE Photonics Technology Letters
- Pub Date:
- February 1994
- DOI:
- 10.1109/68.275410
- Bibcode:
- 1994IPTL....6..143K
- Keywords:
-
- Bragg Angle;
- Electron Beams;
- Gratings (Spectra);
- Laser Modes;
- Light Modulation;
- Lithography;
- Optical Pumping;
- Quantum Well Lasers;
- Quantum Wells;
- Threshold Currents;
- Tunable Lasers;
- Laser Cavities;
- Linearity;
- Lasers and Masers