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DBR grating stabilized ridge waveguide lasers emitting at 647 nm for real 3D holographic displays

机译:用于真实3D全息显示器的647 nm发射的DBR光栅稳定的脊形波导激光器

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Real 3D display applications require RGB light sources which provide a spectral bandwidth of less than 5 MHz for recording (and playing-back) a holographic film. Furthermore, these emitters must be small in size, efficient, robust and reliable. Therefore, diode lasers with internal wavelength filters are the devices of choice. In our paper, we will present a further development of our red-emitting distributed Bragg reflector ridge waveguide laser (DBR-RWL). DBR surface gratings are implemented into the 2 mm long RWL by BCl_3-Ar reactive ion etching. This fabrication process uses a single-epitaxy and is hence industry-compatible. At a heat sink temperature of 15℃ the DBR-RWL provides 120 mW of optical output power in longitudinal single mode emission. Heterodyne linewidth measurements of two identical DBR-RWL show a FWHM linewidth of less than 2 MHz. The excellent beam quality (M~2 =1.1) enables the use of these chips for play-back of holographic films or as master oscillators in a future micro-integrated master oscillator power amplifier configuration for recording.
机译:实际的3D显示应用程序需要RGB光源,该光源提供小于5 MHz的光谱带宽,用于记录(和回放)全息胶片。此外,这些发射器必须小巧,高效,坚固且可靠。因此,带有内部波长滤波器的二极管激光器是首选设备。在我们的论文中,我们将介绍我们的红色发射分布式布拉格反射器脊形波导激光器(DBR-RWL)的进一步发展。通过BCl_3-Ar反应离子刻蚀将DBR表面光栅实现到2 mm长的RWL中。该制造过程使用单外延,因此与行业兼容。在15℃的散热器温度下,DBR-RWL在纵向单模发射中可提供120 mW的光输出功率。两个相同的DBR-RWL的外差线宽测量结果显示FWHM线宽小于2 MHz。优异的光束质量(M〜2 = 1.1)使得这些芯片可用于全息胶片的回放或在将来的用于记录的微集成主振荡器功率放大器配置中用作主振荡器。

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