A linear array of 980 nm VCSEL and its high temperature operation characteristics

作者：Zhang Yan; Ning Yongqiang^*; Wang Ye; Liu Guangyu; Wang Zhenfu; Zhang Xing; Shi Jingjing; Zhang Lisen; Wang Wei; Qin Li; Sun Yanfang; Liu Yun; Wang Lijun

来源：Chinese Journal of Semiconductors, 2009, 30(11): 114008.

DOI：10.1088/1674-4926/30/11/114008

• Beam properties
• Bottom emitting
• Far field distribution
• Gaussians
• High power applications
• High power density
• High temperature
• High-power
• Linear arrays
• Peak power
• Power densities
• Pulse length
• Pulsed operation
• Repetition frequency
• Temperature characteristic
• Temperature dependent
• Thermal interaction
• Vertical-cavity surface emitting laser

A 980 nm bottom-emitting vertical-cavity surface-emitting laser linear array with high power density and a good beam property of Gaussian far-field distribution is reported. This array is composed of five linearly arranged elements with a 200 μm diameter one at the center, the other two 150 μm and 100 μm diameter ones at both sides of the center with center to center spacing of 300 μm and 250 μm, respectively. A power of 880 mW at a current of 4 A and a corresponding power density of up to 1 kW/cm2 is obtained. The temperature dependent characteristics of the linear array are investigated. The thermal interaction between the individual elements of the VCSEL linear array is smaller due to its optimized element size and device spacing, which make it more suitable for high power applications. A peak power of over 20 W has been achieved in pulsed operation with a 60 ns pulse length and a repetition frequency of 1 kHz. ? 2009 Chinese Institute of Electronics.

• 出版日期2009
• 单位中国科学院大学