{"id":540,"date":"2026-01-22T11:32:35","date_gmt":"2026-01-22T03:32:35","guid":{"rendered":"https:\/\/www.ee.nthu.edu.tw\/ultraLab\/about\/"},"modified":"2026-03-04T16:05:15","modified_gmt":"2026-03-04T08:05:15","slug":"research","status":"publish","type":"page","link":"https:\/\/www.ee.nthu.edu.tw\/ultraLab\/research\/","title":{"rendered":"Research"},"content":{"rendered":"\t\t
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Research<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Ultrafast lasers generally refer to laser pulses with pulse durations shorter than the nanosecond time scale, typically in the picosecond or even femtosecond regimes. Because the laser energy is compressed and delivered within an extremely short time window, ultrafast lasers enable the excitation and probing of physical processes on ultrafast time scales. As a result, they are particularly well suited for investigating the dynamics of electrons, atoms, and molecules, including processes such as energy transfer, charge transfer, and structural rearrangements. In addition, the extremely high instantaneous electric field associated with ultrafast laser pulses is sufficient to drive or even ionize electrons in materials, thereby inducing a variety of nonlinear optical effects.<\/p>

\u8d85\u5feb\u96f7\u5c04\uff08ultrafast laser\uff09\u901a\u5e38\u6307\u8108\u885d\u5bec\u5ea6\uff08pulse duration\uff09\u77ed\u65bc\u5948\u79d2\uff08nanosecond\uff09\u5c3a\u5ea6\u7684\u96f7\u5c04\u8108\u885d\uff0c\u5e38\u898b\u7684\u6642\u9593\u7bc4\u570d\u5305\u62ec\u76ae\u79d2\uff08picosecond\uff09\u751a\u81f3\u98db\u79d2\uff08femtosecond\uff09\u7b49\u7d1a\u3002\u7531\u65bc\u96f7\u5c04\u80fd\u91cf\u88ab\u58d3\u7e2e\u4e26\u96c6\u4e2d\u5728\u6975\u77ed\u7684\u6642\u9593\u5167\uff0c\u8d85\u5feb\u96f7\u5c04\u80fd\u5920\u5728\u6975\u77ed\u7684\u6642\u9593\u5c3a\u5ea6\u4e0a\u6fc0\u767c\u4e26\u63a2\u6e2c\u7269\u8cea\u4e2d\u7684\u52d5\u614b\u904e\u7a0b\uff0c\u56e0\u6b64\u7279\u5225\u9069\u5408\u7528\u4f86\u89c0\u6e2c\u96fb\u5b50\u3001\u539f\u5b50\u8207\u5206\u5b50\u7b49\u7cfb\u7d71\u4e2d\u7684\u8d85\u5feb\u52d5\u614b\u884c\u70ba\uff0c\u4f8b\u5982\u80fd\u91cf\u8f49\u79fb\u3001\u96fb\u8377\u8f49\u79fb\u4ee5\u53ca\u7d50\u69cb\u91cd\u6392\u7b49\u73fe\u8c61\u3002\u6b64\u5916\uff0c\u8d85\u5feb\u96f7\u5c04\u6240\u7522\u751f\u7684\u77ac\u6642\u96fb\u5834\u5f37\u5ea6\u975e\u5e38\u9ad8\uff0c\u8db3\u4ee5\u9a45\u52d5\u751a\u81f3\u6e38\u96e2\u6750\u6599\u4e2d\u7684\u96fb\u5b50\uff0c\u9032\u800c\u8a98\u767c\u5404\u7a2e\u975e\u7dda\u6027\u5149\u5b78\u6548\u61c9\u3002<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Nonlinear Pulse Compression<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Through nonlinear optical effects, the spectrum of a pulsed laser can be significantly broadened, enabling it to cover a wider range of frequencies. By carefully compensating the phase differences among the various spectral components (e.g., using techniques such as dispersion compensation or pulse compression), the temporal width of the laser pulse can be further shortened to the femtosecond or even sub-femtosecond regime. This combination of spectral broadening and precise dispersion management represents one of the key approaches for generating extremely short laser pulses.\u00a0The Ultrafast Laser Technologies, Research and Applications Laboratory (ULTRA LAB)<\/strong> focuses on the development of techniques for generating and controlling ultrashort laser pulses. Our research includes nonlinear spectral broadening, pulse compression, and the design and realization of novel ultrafast light sources.<\/p>

\u900f\u904e\u975e\u7dda\u6027\u5149\u5b78\u6548\u61c9\uff08nonlinear optical effects\uff09\uff0c\u8108\u885d\u96f7\u5c04\u7684\u983b\u8b5c\u53ef\u4ee5\u88ab\u6709\u6548\u5c55\u5bec\uff0c\u4f7f\u5176\u6db5\u84cb\u66f4\u5bec\u5ee3\u7684\u983b\u7387\u7bc4\u570d\u3002\u518d\u7d93\u7531\u7cbe\u78ba\u88dc\u511f\u5404\u983b\u7387\u6210\u5206\u4e4b\u9593\u7684\u76f8\u4f4d\u5dee\uff0c\u4f8b\u5982\u5229\u7528\u8272\u6563\u88dc\u511f\u5143\u4ef6\u6216\u8108\u885d\u58d3\u7e2e\u6280\u8853\uff0c\u4fbf\u80fd\u5c07\u96f7\u5c04\u8108\u885d\u7684\u6642\u9593\u5bec\u5ea6\u9032\u4e00\u6b65\u7e2e\u77ed\u81f3\u98db\u79d2\u751a\u81f3\u6b21\u98db\u79d2\u5c3a\u5ea6\u3002\u9019\u7a2e\u7d50\u5408\u983b\u8b5c\u5c55\u5bec\u8207\u76f8\u4f4d\u63a7\u5236\u7684\u6280\u8853\uff0c\u662f\u7522\u751f\u6975\u77ed\u96f7\u5c04\u8108\u885d\u7684\u95dc\u9375\u65b9\u6cd5\u4e4b\u4e00\u3002\u8d85\u5feb\u96f7\u5c04\u6280\u8853\u8207\u61c9\u7528\u5be6\u9a57\u5ba4\uff08ULTRA LAB\uff09\u5c08\u6ce8\u65bc\u958b\u767c\u6975\u77ed\u8108\u885d\u96f7\u5c04\u7684\u7522\u751f\u8207\u63a7\u5236\u6280\u8853\uff0c\u7814\u7a76\u5167\u5bb9\u6db5\u84cb\u975e\u7dda\u6027\u983b\u8b5c\u5c55\u5bec\u3001\u8108\u885d\u58d3\u7e2e\u4ee5\u53ca\u65b0\u578b\u8d85\u5feb\u5149\u6e90\u7684\u8a2d\u8a08\u8207\u5be6\u73fe\u3002<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Mid-infrared Generation and Application<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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The mid-infrared (MIR) spectral region is often referred to as the molecular fingerprint region, as many molecular vibrational transitions occur within this wavelength range. As a result, MIR spectroscopy provides highly selective information about molecular structures and chemical compositions. This capability makes MIR spectroscopy a powerful tool for applications in chemical sensing, materials characterization, environmental monitoring, and biomedical diagnostics.<\/p>

\u4e2d\u7d05\u5916\u5149\uff08mid-infrared, MIR\uff09\u5149\u8b5c\u5340\u57df\u5e38\u88ab\u7a31\u70ba\u300c\u5206\u5b50\u6307\u7d0b\u5340\u300d\uff08molecular fingerprint region\uff09\uff0c\u56e0\u70ba\u591a\u6578\u5206\u5b50\u7684\u632f\u52d5\u8e8d\u9077\u90fd\u4f4d\u65bc\u6b64\u6ce2\u6bb5\uff0c\u4f7f\u5f97\u4e2d\u7d05\u5916\u5149\u80fd\u5920\u63d0\u4f9b\u9ad8\u5ea6\u9078\u64c7\u6027\u7684\u5316\u5b78\u8207\u5206\u5b50\u7d50\u69cb\u8cc7\u8a0a\u3002\u56e0\u6b64\uff0c\u4e2d\u7d05\u5916\u5149\u8b5c\u6280\u8853\u5728\u5316\u5b78\u5206\u6790\u3001\u6750\u6599\u9451\u5b9a\u3001\u74b0\u5883\u76e3\u6e2c\u4ee5\u53ca\u751f\u91ab\u6aa2\u6e2c\u7b49\u9818\u57df\u4e2d\u5177\u6709\u6975\u70ba\u91cd\u8981\u7684\u61c9\u7528\u50f9\u503c\u3002<\/span><\/p>

When combined with ultrashort laser technology, MIR light enables a new class of ultrafast spectroscopic techniques. Ultrafast MIR spectroscopy allows researchers to directly observe molecular vibrations, energy transfer processes, and charge dynamics on femtosecond time scales, providing critical insight into fundamental light\u2013matter interactions.<\/p>

\u7576\u4e2d\u7d05\u5916\u5149\u8207\u8d85\u77ed\u8108\u885d\u96f7\u5c04\u6280\u8853\u7d50\u5408\u6642\uff0c\u5176\u61c9\u7528\u7bc4\u570d\u66f4\u9032\u4e00\u6b65\u62d3\u5c55\u81f3\u8d85\u5feb\u5149\u8b5c\u7814\u7a76\u3002\u900f\u904e\u4e2d\u7d05\u5916\u8d85\u5feb\u5149\u8b5c\u91cf\u6e2c\uff0c\u7814\u7a76\u4eba\u54e1\u53ef\u4ee5\u5728\u98db\u79d2\u6642\u9593\u5c3a\u5ea6\u4e0a\u76f4\u63a5\u89c0\u6e2c\u5206\u5b50\u632f\u52d5\u3001\u80fd\u91cf\u8f49\u79fb\u8207\u96fb\u8377\u52d5\u614b\u7b49\u904e\u7a0b\uff0c\u70ba\u7406\u89e3\u5149\u8207\u7269\u8cea\u4ea4\u4e92\u4f5c\u7528\u63d0\u4f9b\u91cd\u8981\u5de5\u5177\u3002<\/span><\/p>

Beyond spectroscopy, ultrafast MIR laser pulses are also emerging as promising tools for precision laser processing in semiconductor materials. Because MIR wavelengths strongly couple to molecular vibrational modes, they enable selective bond excitation, reduced thermal damage, and the fabrication of novel micro- and nanoscale structures. These unique capabilities open new opportunities in advanced manufacturing and photonic technologies.<\/p>

\u9664\u4e86\u5149\u8b5c\u5b78\u4e4b\u5916\uff0c\u4e2d\u7d05\u5916\u8d85\u5feb\u96f7\u5c04\u4ea6\u9010\u6f38\u5c55\u73fe\u51fa\u5728\u7cbe\u5bc6\u534a\u5c0e\u9ad4\u6750\u6599\u52a0\u5de5\u4e0a\u7684\u6f5b\u529b\u3002\u7531\u65bc\u4e2d\u7d05\u5916\u5149\u80fd\u6709\u6548\u8026\u5408\u6750\u6599\u4e2d\u7684\u632f\u52d5\u6a21\u5f0f\uff0c\u4e2d\u7d05\u5916\u96f7\u5c04\u53ef\u7528\u65bc\u9078\u64c7\u6027\u9375\u7d50\u6fc0\u767c\u3001\u4f4e\u71b1\u5f71\u97ff\u52a0\u5de5\uff0c\u4ee5\u53ca\u65b0\u578b\u5fae\u5948\u7c73\u7d50\u69cb\u88fd\u4f5c\uff0c\u70ba\u5148\u9032\u88fd\u9020\u8207\u5149\u96fb\u6280\u8853\u5e36\u4f86\u65b0\u7684\u53ef\u80fd\u6027\u3002<\/span><\/p>

In ULTRA LAB, we will focus on the development of next-generation ultrafast MIR light sources and their applications. By utilizing nonlinear optical techniques to generate broadband and ultrashort MIR pulses, we aim to advance ultrafast MIR spectroscopy, molecular dynamics studies, and precision MIR laser processing. Through these efforts, we seek to expand the frontiers of MIR photonics for both fundamental science and emerging technological applications.<\/p>

\u672c\u5be6\u9a57\u5ba4\u81f4\u529b\u65bc\u767c\u5c55\u65b0\u4e00\u4ee3\u4e2d\u7d05\u5916\u8d85\u77ed\u8108\u885d\u5149\u6e90\u8207\u76f8\u95dc\u61c9\u7528\u3002\u6211\u5011\u7684\u7814\u7a76\u805a\u7126\u65bc\u5229\u7528\u975e\u7dda\u6027\u5149\u5b78\u6280\u8853\u7522\u751f\u5bec\u983b\u4e14\u6975\u77ed\u7684\u4e2d\u7d05\u5916\u96f7\u5c04\u8108\u885d\uff0c\u4e26\u63a2\u7d22\u5176\u5728\u8d85\u5feb\u4e2d\u7d05\u5916\u5149\u8b5c\u3001\u5206\u5b50\u52d5\u529b\u5b78\u7814\u7a76\u4ee5\u53ca\u4e2d\u7d05\u5916\u96f7\u5c04\u7cbe\u5bc6\u52a0\u5de5\u7b49\u9818\u57df\u4e2d\u7684\u61c9\u7528\uff0c\u671f\u671b\u85c9\u6b64\u63a8\u52d5\u4e2d\u7d05\u5916\u5149\u5b50\u6280\u8853\u5728\u57fa\u790e\u79d1\u5b78\u8207\u5de5\u7a0b\u9818\u57df\u4e2d\u7684\u767c\u5c55\u3002<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

Research Ultrafast lasers generally refer to laser pulses with pulse durations shorter than the nanosecond time scale, typically in the picosecond or even femtosecond regimes. Because the laser energy is compressed and delivered within an extremely short time window, ultrafast lasers enable the excitation and probing of physical processes on ultrafast time scales. As a result, they are particularly well suited for investigating the dynamics of electrons, atoms, and molecules, including processes such as energy transfer, charge transfer, and structural rearrangements. In addition, the extremely high instantaneous electric field associated with ultrafast laser pulses is sufficient to drive or even ionize electrons in materials, thereby inducing a variety of nonlinear optical effects. \u8d85\u5feb\u96f7\u5c04\uff08ultrafast laser\uff09\u901a\u5e38\u6307\u8108\u885d\u5bec\u5ea6\uff08pulse duration\uff09\u77ed\u65bc\u5948\u79d2\uff08nanosecond\uff09\u5c3a\u5ea6\u7684\u96f7\u5c04\u8108\u885d\uff0c\u5e38\u898b\u7684\u6642\u9593\u7bc4\u570d\u5305\u62ec\u76ae\u79d2\uff08picosecond\uff09\u751a\u81f3\u98db\u79d2\uff08femtosecond\uff09\u7b49\u7d1a\u3002\u7531\u65bc\u96f7\u5c04\u80fd\u91cf\u88ab\u58d3\u7e2e\u4e26\u96c6\u4e2d\u5728\u6975\u77ed\u7684\u6642\u9593\u5167\uff0c\u8d85\u5feb\u96f7\u5c04\u80fd\u5920\u5728\u6975\u77ed\u7684\u6642\u9593\u5c3a\u5ea6\u4e0a\u6fc0\u767c\u4e26\u63a2\u6e2c\u7269\u8cea\u4e2d\u7684\u52d5\u614b\u904e\u7a0b\uff0c\u56e0\u6b64\u7279\u5225\u9069\u5408\u7528\u4f86\u89c0\u6e2c\u96fb\u5b50\u3001\u539f\u5b50\u8207\u5206\u5b50\u7b49\u7cfb\u7d71\u4e2d\u7684\u8d85\u5feb\u52d5\u614b\u884c\u70ba\uff0c\u4f8b\u5982\u80fd\u91cf\u8f49\u79fb\u3001\u96fb\u8377\u8f49\u79fb\u4ee5\u53ca\u7d50\u69cb\u91cd<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"no-sidebar","site-content-layout":"page-builder","ast-site-content-layout":"full-width-container","site-content-style":"unboxed","site-sidebar-style":"unboxed","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"enabled","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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