在本論文中,成功作出以 Nd:GdVO4 作為固態雷射系統之增益介質(gain medium)的雙波長雷射。此雷射系統所使用的輸出耦合鏡(output coupler)為受溫度控制的體積布拉格光柵(volume Bragg grating)。產生雙波長輸出的方 式為透過調整體積布拉格光柵的溫度使得輸出之雷射能夠對應到不同的受激輻射截面積(emission cross section),進而改變雷射系統之增益(gain)。以此方法,一共作出三部以 Nd:GdVO4 為增益介質而輸出波長相異的雙波長固態雷射。而最後利用在雷射共振腔內加入額外的 Nd:YAG 以及體積布拉格光柵,成功作出了固態三波長雷射。;Solid-state dual-wavelength lasers were constructed using a Nd:GdVO4 as the gain medium. The output couplers used in these laser cavities were temperature controlled volume Bragg gratings. The gain of the laser cavities was adjusted by changing the temperatures of the VBGs. Temperature adjustment mainly results in thermal expansion of the VBGs, and shifts the corresponding diffraction spectrums, which will then alter the corresponding emission cross section of the laser outputs. Through this method, three dual-wavelength lasers utilizing different emission peaks of the Nd:GdVO4 were realized. The third wavelength was achieved through an additional Nd:YAG and VBG inside the laser cavity.
