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type="text/css"></style> <div id="ct" class="ct2 wp cl"> <div class="mn"> <div class="bm_haa cl"> <div class="bm_h cl"> <a href="http://www.oecr.com/portal.php?mod=rss&catid=57" class="y xi2 rss" target="_blank" title="RSS">订阅</a><h1 class="xs2">文章</h1> </div></div> <div class="kjkjb"> <div class="bm vw" style="margin-bottom:0;"> <div class="h hm"> <div class="zxtoux"><img src="http://www.oecr.com/uc_server/avatar.php?uid=54876&size=small" /></div> <h1 class="ph">福建物构所金属氟碘酸盐非线性光学晶体研究获得新进展 </h1> <p class="xg1"> 时间：2020-9-3 13:51<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(494)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=8676&idtype=aid" title="查看全部评论"><em id="_commentnum">5</em></a>来自: 福建物构所</p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=57" class="y xi2 rss" target="_blank" title="RSS">订阅</a></div> </div> <!--[diy=diysummarytop]--><div id="diysummarytop" class="area"></div><!--[/diy]--> <div class="s"> <div class="ss"><div><span>导读： </span>中红外(3-5μm)激光因在激光通讯，激光调控和激光医学等领域有广泛的应用而备受关注。</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content"><div> 中红外(3-5μm)<a href="http://laser.oecr.com" target="_blank" class="relatedlink">激光</a>因在激光通讯，激光调控和激光医学等领域有广泛的应用而备受关注。传统的红外<a href="http://material.oecr.com" target="_blank" class="relatedlink">晶体</a>AgGaS2和ZnGeP2可用于中红外波段，但因其损伤阈值较低，限制其实际应用。碘酸盐非线性光学晶体<a href="http://material.oecr.com" target="_blank" class="relatedlink">材料</a>通常可实现大的二阶非线性光学效应、高的激光损伤阈值、宽的透光范围(紫外-中红外)、适中的双折射，是一种具有潜力的非线性光学晶体。</div><div><br></div><div> 中国科学院福建物质结构研究所光电材料化学与<a href="http://theory.oecr.com" target="_blank" class="relatedlink">物理</a>重点实验室叶宁研究团队，将能够有效增大带隙、提高损伤阈值的F-离子和对能够增大晶体结构极性的Bi3+离子引入碘酸根体系，设计合成具有大倍频效应和高损伤阈值的(NH4)Bi2(IO3)2F5非线性光学晶体。该晶体的倍频效应是KDP的9.2倍，损伤阈值是AgGaS2的40.2倍。该晶体具有合适的双折射率(0.0690@589.3nm)，能够实现相位匹配。此外，通过NH4+离子的引入可以增强层间作用，并降低晶体的生长温度。</div><div><br></div><div> 论文第一作者是福建物构所助理研究员范慧歆，论文通讯作者为副研究员彭广、研究员叶宁，相关研究成果发表在《应用化学》(Angew.Chem.Int.Ed.)上。研究工作受到中科院战略性先导科技专项(B类)“结构与功能导向的新物质创制”、国家自然科学基金等的资助。</div><div><br></div><div> 此外，该研究团队近期在中远红外NLO材料的设计、合成、晶体生长和非线性性能研究方面取得系列研究进展(Chem.Mater.2020,DOI:10.1021/acs.chemmater.0c02837;Chem.Mater.2020,32,2615–2620，Chem.Mater.2019,31,10170-10177)。</div><div><br></div><div><br></div><div><div style="overflow-wrap: normal; color: rgb(143, 143, 143); font-family: Tahoma, " microsoft="" yahei",="" simsun;="" background-color:="" rgb(255,="" 255,="" 255);"=""><br style="overflow-wrap: normal;"></div><div style="overflow-wrap: normal; color: rgb(143, 143, 143); font-family: Tahoma, " microsoft="" yahei",="" simsun;="" background-color:="" rgb(255,="" 255,="" 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