SPECTROMETERS UTILIZING MID INFRARED ULTRA BROADBAND HIGH BRIGHTNESS LIGHT SOURCES
    11.
    发明申请
    SPECTROMETERS UTILIZING MID INFRARED ULTRA BROADBAND HIGH BRIGHTNESS LIGHT SOURCES 审中-公开
    使用MID红外超宽带高亮度光源的光谱仪

    公开(公告)号:US20110058176A1

    公开(公告)日:2011-03-10

    申请号:US12263948

    申请日:2008-11-03

    IPC分类号: G01J3/45 G01J5/02

    摘要: A mid infrared spectrometer comprises a high brightness broadband source that generates an output with a broad spectral range in the order of hundreds of wave numbers, a wavelength dispersive element and a detector. In one embodiment, the source comprises an array of semiconductor laser devices operating simultaneously. Each device emits light at wavelength different from the wavelengths emitted by the other devices in the array and the devices are arranged so that the combined output continuously covers the broad spectral range. In another embodiment, each of the lasers in the array is a quantum cascade laser device. In still another embodiment, the quantum cascade laser devices in the array are operated in the regime of Risken-Nummedal-Graham-Haken (RNGH) instabilities. In yet another embodiment, each of the lasers in the array is a mode-locked quantum cascade laser device.

    摘要翻译: 中红外光谱仪包括高亮度宽带源,其产生具有数百个波数量级的宽光谱范围的输出,波长色散元件和检测器。 在一个实施例中,源包括同时操作的半导体激光器件阵列。 每个器件发射波长不同于阵列中其他器件发射的波长的光,并且器件被布置成使得组合输出连续地覆盖宽光谱范围。 在另一个实施例中,阵列中的每个激光器是量子级联激光器件。 在又一个实施例中,阵列中的量子级联激光器件在Risken-Nummedal-Graham-Haken(RNGH)不稳定的状态下运行。 在另一个实施例中,阵列中的每个激光器是锁模量子级联激光器件。