High-repetition-rate passively mode-locked solid-state laser
    2.
    发明授权
    High-repetition-rate passively mode-locked solid-state laser 有权
    高重复率被动锁模固态激光器

    公开(公告)号:US07106764B1

    公开(公告)日:2006-09-12

    申请号:US10343056

    申请日:2000-07-27

    IPC分类号: H01S3/098

    CPC分类号: H01S3/1118 H01S3/113

    摘要: A passively mode-locked solid-state laser is designed to emit a continuous-wave train (51, 52) of electromagnetic-radiation pulses, the fundamental repetition rate of the emitted pulses exceeding 1 GHz, without Q-switching instabilities. The laser includes an optical resonator (3.1), a solid-state laser gain element (2) placed inside the optical resonator (3.1), a device (1) for exciting said laser gain element (2) to emit electromagnetic radiation having the effective wavelength, and a device (4) for passive mode locking including a saturable absorber. The laser gain element (2) is a laser material with a stimulated emission cross section exceeding 0.8×10−18 cm2 at the effective wavelength, and is made of Nd:vanadate. The saturable absorber (4) is preferably a semiconductor saturable absorber mirror (SESAM) device. Even higher repetition rates are achieved by operating the laser in the soliton regime. For use in fiber-optical telecommunication, the laser wavelength is preferably shifted to 1.5 μm by use of an optical parametric oscillator. The laser is simple, robust, compact, efficient, and low-cost. It generates a relatively large average power of 100 mW and higher, which is useful for a number of optical probing and detection applications, in a beam (51, 52) that is substantially a fundamental spatial mode.

    摘要翻译: 被动锁模固态激光器被设计为发射电磁辐射脉冲的连续波列(51,52),发射脉冲的基本重复频率超过1GHz,没有Q切换不稳定性。 激光器包括光谐振器(3.1),放置在光学谐振器(3.1)内部的固态激光增益元件(2),用于激发所述激光增益元件(2)以发射具有有效 以及用于被动模式锁定的装置(4),包括可饱和吸收体。 激光增益元件(2)是在有效波长处具有超过0.8×10 -8 cm 2的受激发射横截面的激光材料,并且由Nd:钒酸盐 。 可饱和吸收体(4)优选为半导体可饱和吸收镜(SESAM)装置。 通过在孤子状态下操作激光器来实现更高的重复率。 为了在光纤通信中使用,通过使用光学参量振荡器,激光波长优选地移位到1.5μm。 激光器简单,坚固,紧凑,高效,低成本。 在基本上是基本空间模式的光束(51,52)中,其产生100mW及更高的相对大的平均功率,这对于许多光学探测和检测应用是有用的。