公开(公告)号：US20150063381A1

公开(公告)日：2015-03-05

申请号：US14534301

申请日：2014-11-06

Applicant: BAE Systems Information and Electronic Systems Integration Inc.

Inventor： Daniel J. Creeden

IPC: G02B6/26 ,  H01S3/067

CPC classification number: G02B6/262 ,  G02B6/02 ,  G02B6/29368 ,  H01S3/005 ,  H01S3/06708 ,  H01S3/06733 ,  H01S3/06754 ,  H01S3/094007 ,  H01S3/094015

Abstract: Techniques are disclosed for improving pump absorption and efficiency for fiber lasers and amplifiers, for instance. In some embodiments, the techniques are implemented by applying a partially reflective coating on a fiber end-face to double-pass any unabsorbed or otherwise excess pump light in the cladding of a fiber. While being reflective to pump wavelengths, the coating can be non-reflective at the lasing wavelength, so as to avoid unwanted feedback into the system. The benefits of this approach include that excess pump power can be effectively utilized to add more power to the laser output. In addition, the double-pass technique allows for the use of a shorter fiber length, which in turn allows for more compact system designs, saves on material costs, and facilitates manufacturability.

Abstract translation: 公开了用于提高光纤激光器和放大器的泵吸收和效率的技术。 在一些实施例中，这些技术通过在纤维端面上施加部分反射涂层以使在纤维包层中的任何未吸收或过剩的泵浦光双重通过来实现。 在反射泵浦波长的同时，涂层可以在激光波长处不反射，以避免不必要的反馈到系统中。 这种方法的优点包括可以有效地利用多余的泵功率来为激光输出增加更多的功率。 此外，双程技术允许使用较短的光纤长度，这又允许更紧凑的系统设计，节省材料成本并且有利于可制造性。