Development of a high-energy picosecond fiber amplifier for biomedical applications

激光手术代表着一个巨大且利润丰厚的市场，正在快速增长。许多激光现在普遍用于各种医疗程序，即在普通外科，眼科和美学。为了满足眼科手术的要求，光-物质相互作用公司开发了一种激光系统，可以产生波长为2.9微米的高能皮秒脉冲，接近水的绝对最大吸收。该激光系统已证明其效率，以满足最苛刻的应用眼科激光手术。然而，开发的激光系统是基于效率低下的固态结构，这导致了相当低的整体效率，需要水冷却才能在眼科手术应用的目标能量水平上运行。因此，当前提案的目标是开发基于光纤的放大器系统，该系统能够产生接近2.9微米的皮秒脉冲，其目标能量脉冲需要支持苛刻的眼科激光手术。该基于光纤的系统将与拉瓦尔大学的COPL合作开发，将彻底改变公司目前的激光系统架构，在紧凑性和效率方面取得重大进展。

Laser surgery represents a huge and profitable market growing at a rapid rate. Many lasers are now commonlyused for various medical procedures namely in general surgery, ophthalmology and aesthetics. To meet therequirements of eye surgery, Light-Matter Interaction Inc. has developed a laser system that produceshigh-energy picosecond pulses at a wavelength of 2.9 microns, near the absolute maximum absorption ofwater. This laser system has demonstrated its efficiency in meeting the most demanding applications inophthalmologic laser procedures. However, the laser system developed is based on an inefficient solid-statearchitecture, which results in a quite low overall efficiency that requires water-cooling to operate at the targetedenergy level for the eye surgery application. The goal of the current proposal is therefore to develop afiber-based amplifier system able to produce picosecond pulses near 2.9 microns with the targeted energy perpulse required to support demanding ophthalmologic laser procedures. The fiber-based system to be developedin collaboration with the COPL at Laval University will drastically change the company's current laser systemarchitecture with significant gains in compactness and efficiency.