A surface-emitting distributed Talbot filter laser that provides for radiation of energy in in-phase radiating modes to produce improved beam quality. The distributed Talbot filter laser of the present invention comprises a plurality of sets of parallel stripe contacts, wherein adjacent parallel sets of parallel stripe contacts are offset from each other. The laser may optionally employ a phase corrector for reducing sidelobe energy. In addition, the plurality of stripe contacts may each have a relatively large stripe width to increase a near-field fill factor of the laser and thereby reduce sidelobe energy. The gain profile of the laser is patterned using the offset stripe contact design, such that the stripe pattern matches the intensity profile of the preferred in-phase mode. The stripe pattern is comprised of offset parallel arrays of stripes spaced apart by a distance D and having length nD.sup.2 /&lgr;, wherein n is the effective index of refraction and &lgr; is the wavelength of the laser radiation in a vacuum. The in-phase radiating mode has a central far-field lobe located on-axis, resulting in a higher radiance laser.
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机译:一种表面发射式分布式Talbot滤光激光器,它以同相辐射模式提供能量辐射,以提高光束质量。本发明的分布式Talbot滤光激光器包括多组平行条形触点,其中相邻的平行条形触点的平行组彼此偏置。激光器可以可选地采用相位校正器来减小旁瓣能量。另外,多个条形触点中的每个可以具有相对大的条带宽度,以增加激光器的近场填充因子,从而减小旁瓣能量。激光的增益轮廓使用偏移条纹接触设计进行构图,以使条纹图案与首选同相模式的强度轮廓相匹配。条纹图案由间隔开距离D并具有长度n D s 2 / lgr的条纹的偏移平行阵列组成,其中n是有效折射率,而n是有效折射率。是真空中激光辐射的波长。同相辐射模式具有位于轴上的中心远场瓣,从而产生更高辐射的激光。
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