Laser refers to light amplification by stimulated emission of radiation, which produces a coherent, collimated, and monochromatic beam of light by exciting atoms to a higher energy level. Lasers are distinguished from other light sources by their coherence. Spatial coherence property of laser enables it to stay narrow over great distances and allows it to be focused on a tight spot. As a result of these properties, they are widely used in applications such as laser pointers, laser cutting, and lithography. Lasers are classified based on the type of lasing medium they use such as gas, optical fiber, solid state, and semiconductor.

本周上证综指整体上涨,综合和电子涨幅较大。申万家 电指数整体上涨，涨幅 1.09%，相较上证综指的 0.02%高出 1.1 个 百分点。细分板块中，其它视听器材、彩电涨幅较大，分别为 1.67% 和 1.16%。个股方面，涨幅较大的为万家乐（6.95%）、依米康 （6.42%）、小天鹅 B（6.15%）。

A 股计算机行业主要反映政企的IT 需求，在经济下行的过程中，IT 支出作为可选支出需求有显著影响；而且中国的政府部门及大型企业信息化经过20 多年的发展在相对成熟。在IT 需求增速减缓的过程中，行业集中度有所提升的龙头公司的增长超过整个行业。另外，因为A 股的IT 行业上市公司中，相对稀缺的产品型公司在成长之后的规模经济显著。在当前的行业背景下，建议投资关注龙头公司和产品型公司。

ATCA is an industry standard specification developed by the PICMG for nextgeneration CG communications equipment. PICMG is an association of numerous companies and organizations, which collaboratively develop open standards for highperformance telecommunications, military, industrial, and general-purpose embedded computing applications. PICMG’s original motto was to extend the PCI standard to non-desktop applications. Some of the major standard families developed by PICMG comprise CompactPCI, AdvancedTCA, MicroTCA, AdvancedMC, CompactPCI Serial, COM Express, SHB Express, and HPM.

Chip-scale packaging (CSP) emerged in the 1990s. By 1998, wafer-level CSPs emerged as the most preferred form of chip packaging solutions due to their low cost benefits in applications, ranging from application-specific integrated circuits (ASICs) and microprocessors to electrically erasable programmable read-only memory (EEPROM). WLP is one of the key trending technologies used for CSP and is gaining popularity among fabless and foundry companies globally. The major benefit of WLP is that wafer fabrication and testing is done on the wafer itself, reducing the cost of WLP with increasing wafer size and decreasing die size.

上周计算机板块上涨3.78%，同期沪深300 上涨1.53%，板块跑输大盘2.25个百分点，位列所有版块第1 位。TMT 其他三大板块中，传媒上涨3.42%，位列第3 位；电子元器件上涨2.57%，位列第8 位；通信上涨3.75%，位列第2 位。创业板指数上涨2.95%。