研究目的
Investigating the spectral behaviors of lasing from semiconductor square ring microcavities with structures for unidirectional laser oscillation.
研究成果
The study concluded that introducing a tapered structure in semiconductor square ring cavities causes a blue shift in the lasing envelope due to additional loss, while a saw-edged structure functions well for unidirectional lasing without significant additional loss. The statistical approach used can be applied to other schemes for versatile semiconductor lasers.
研究不足
The surface roughness and the vertical degree of the etched wall depend on the location in the wafer, which may affect the consistency of the results.
1：Experimental Design and Method Selection:
The study involved fabricating square ring cavities on a semiconductor wafer and introducing tapered and saw-edged structures to investigate their effects on lasing behavior.
2：Sample Selection and Data Sources:
Semiconductor square ring cavities of various sizes were fabricated on an InP substrate.
3：List of Experimental Equipment and Materials:
An acousto-optic (AO) Q-switched Nd:YVO4 pulsed laser was used for optical pumping, and an optical spectrum analyzer (OSA) was used to measure the lasing spectrum.
4：Experimental Procedures and Operational Workflow:
The pump beam was focused onto the cavity, and the lasing signal was collected by a tapered fiber from a cavity corner.
5：Data Analysis Methods:
The center wavelengths of lasing envelopes were analyzed to estimate additional loss caused by the introduced structures.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
