24小时热门版块排行榜

返回列表

【奖励】本帖被评价2次，作者suming0821增加金币 1.5 个

当前主题已经存档。

suming0821

铁杆木虫 (小有名气)

应助: 0 (幼儿园)
金币: 11304.8
帖子: 221
在线: 5.3小时
虫号: 89668

[资源] 2006年关于有机半导体激光的一篇综述

The field of easily processed organic semiconductor lasers
(OSLs) is young at little more than a decade old and
advancing rapidly. It provides exciting new challenges and
opportunities for light-emitting materials beyond organic
light-emitting diodes. There have been many important
developments over the past few years. Laser and material
design have advanced to reduce thresholds, enabling OSLs
to be pumped by compact solid-state sources. Broad tuneability
and simple fabrication have been shown as well as
short pulse generation and broad-band optical amplification.
These advances draw on well-known general features of
organic semiconductors for any application, such as simple
processing and the scope for tuning properties, and have
stimulated work that exploits these properties in new ways.
For example, the simple processing has enabled a remarkable
range of laser structures to be made in very simple ways,
including simple nanoimprinting of wavelength-scale features.
In addition the scope for blending to tune properties
has been used to reduce thresholds considerably. Some of
the other advances draw on properties of the materials that
are more specific to lasing, such as strong absorption and
broad spectra, and use these properties in many ways. The
strong absorption (and associated strong stimulated emission)
enables extraordinarily compact lasers and optical amplifiers
to be made. The broad spectra enable not only tuneable lasers
to be made but also femtosecond pulse generation and broadband
optical amplification. As we look to the future, it is
important to keep in mind that this progress has been made
mainly using materials developed for organic light-emitting
diodes, so new opportunities and further progress can be
expected from developing materials specifically for laser
applications. Promising future directions include exploiting
the compatibility with polymer optical fiber and using the
distinctive chemical properties of organic semiconductors for
sensing. Beyond that, electrical pumping remains a major
challenge. However, a key recent breakthrough is the
demonstration of direct optical pumping of polymer lasers
by gallium nitride diode lasers. Such indirect electrical
pumping gives many of the advantages of electrical pumping
and paves the way for OSLs to become practical sources,
initially for use in a range of spectroscopic applications.

[ Last edited by luo.henry on 2008-4-25 at 14:58 ]

回复此楼