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    • 89. 发明申请
    • PLANE WAVEGUIDE TYPE LASER AND DISPLAY DEVICE
    • 平面波形激光和显示设备
    • US20110255562A1
    • 2011-10-20
    • US13141910
    • 2009-02-05
    • Shuhei YamamotoYosuke AkinoTakayuki YanagisawaYoshihito Hirano
    • Shuhei YamamotoYosuke AkinoTakayuki YanagisawaYoshihito Hirano
    • H01S3/10H01S3/13
    • H01S3/042H01S3/0092H01S3/0405H01S3/0632H01S3/0804H01S3/08072H01S3/094076H01S3/09415H01S3/1028H01S3/2383H01S5/4025H04N9/3161
    • A plane waveguide type laser according to the present invention includes: a plate-shaped laser medium (5); a semiconductor laser (1) which causes excitation light to enter an end surface (5a) of the laser medium (5); first and second claddings (4a and 4b) which are bonded to lower and upper surfaces of the laser medium (5), respectively, to form a waveguide in a vertical direction; a comb heat sink (2) bonded to a lower surface of the first cladding (4a); and thermal lens producing means (20) bonded to an upper surface of the second cladding (4b). In this structure, laser oscillation in the vertical direction is performed in a waveguide mode of the laser medium (5), and the thermal lens producing means (20) forms a periodic lens effect in the laser medium (5) to perform laser oscillation in a lateral direction in a plurality of resonant modes. Therefore, a resonator having a small round-trip loss maybe formed without depending on a size of a thermal lens produced by excitation, and hence a rising characteristic of a pulse operation or a CW operation may be smoothed to obtain high-power stable output.
    • 根据本发明的平面波导型激光器包括:板状激光介质(5); 使激发光进入激光介质(5)的端面(5a)的半导体激光器(1); 第一和第二包层(4a和4b),其分别结合到激光介质(5)的下表面和上表面,以在垂直方向上形成波导; 结合到第一包层(4a)的下表面的梳形散热器(2); 以及粘合到第二包层(4b)的上表面的热透镜产生装置(20)。 在这种结构中,在激光介质(5)的波导模式中执行垂直方向的激光振荡,并且热透镜产生装置(20)在激光介质(5)中形成周期性透镜效应,以在 多个谐振模式中的横向方向。 因此,可以在不依赖于通过激励产生的热透镜的尺寸的情况下形成具有小的往返损耗的谐振器,因此可以平滑脉冲操作或CW操作的上升特性以获得高功率稳定的输出。