Wide-tuning ultrafast laser crystal material and application thereof

Abstract

The invention relates to a wide-tuning ultrafast laser crystal material and application thereof. The wide-tuning ultrafast laser crystal material is characterized in that the laser crystal material consists of ytterbium ion doped bismuth silicate laser crystals (Yb: Bi12SiO20, Yb: BSO for short). Yb ions have large energy level splitting in the BSO laser crystals so that the material has a low laser threshold and a large tuning width in laser application. The growth of the Yb: BSO crystals can be obtained by adopting various crystal growth methods such as a pulling method, a Bridgman method, a zone melting method and the like. The excellent laser optical characteristics of the Yb: BSO crystals realize a laser diode (LD) direct pumped low-threshold wide-tuning ultrafast laser, so that lasers are simpler and more miniature.

Description

technical field

[0001] The invention relates to a wide tuning ultrafast laser crystal material (Yb:Bi 12 SiO 20 , hereinafter referred to as Yb:BSO) and its application. Background technique

[0002] Diode-pumped femtosecond lasers are laser sources that generate high peak power and high repetition rate pulses. It has the characteristics of compact structure, economy and full curing. Laser materials doped with Yb ions for low-threshold wide-tunable high-power ultrafast lasers will be the focus of research on Yb laser materials in the future, and have very important strategic significance for the development of all-solid-state high-performance lasers. Tunable laser refers to a laser that can continuously change the laser output wavelength within a certain range. It is one of the important development directions of current laser technology and can be used in spectroscopy, photochemistry, medicine, biology, integrated optics, pollution monitoring, Semiconductor material pro...