Songhao Liu

Xinjiang Institute of Ecology and Geography

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Changjun Liao

Chongqing University

Zhouyi Guo

South China Normal University

Zhengjun Wei

South China Normal University

Changshui Chen

Ningbo University

Jindong Wang

Chongqing University

Qi Guo

South China Normal University

Timon Cheng‐Yi Liu

South China Normal University

Changchun Zeng

Longgang Central Hospital

Wen‐Cheng Xu

South China Normal University

Banghong Guo

South China Normal University

Cooperative Institutions

South China Normal University

214

Chinese Academy of Sciences

136

Sun Yat-sen University

University of Chinese Academy of Sciences

University of Science and Technology of China

Huazhong University of Science and Technology

Peking University

Jinan University

Shanghai Jiao Tong University

Zhejiang University

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Quantum key distribution system based on combined modulation

Acta Physica Sinica (2013)

Banghong Guo Yang Li Chong Xiang Chong Guan Ling-An Wu

We suggest a combined modulation quantum key distribution (QKD) system which encodes each single-photon signal with both phase modulation and polarization modulation. With the aid of dual-velocity protocol of hybrid QKD system, we construct a scheme to realize this combined modulation QKD which generates two-bit key with one signal for increasing the efficiency of QKD. We also develop a combined modulation Michelson QKD system, then solve the stability problem of the combined modulation QKD system in principle.

Quantum key distribution

Modulation (music)

Continuous phase modulation

10.7498/aps.62.130303

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Citations (7)

NEUTROPHIL MEDIATED ANTIMICROBIAL PHOTOBIOMODULATION

Timon Cheng‐Yi Liu Ling Zhu KANGTAO LV Songhao Liu

10.1142/9789812832344_0048

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<title>367 cases of CO2 laser therapy on facial acne</title>

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE (1996)

Yunqing Gao Songhao Liu You Zhang T. C. Liu

Since 1989, we have cured 367 persons of facial acne of different course by using direct irradiation of high-power CO₂ laser combing with operative therapy of low-power CO₂ laser. The cure rate is 100 percent. In this paper, we stated the therapeutic approach. It was shown that this therapeutic approach is simple and effective, and its recurrence rate is zero. There are no cicatrices after healing. It is easy to accept it, and is worthy of extension.

Combing

10.1117/12.251943

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Photobiomodulation as a cellular model of traditional Chinese medicine

Chinese Optics Letters (2005)

Timon Chengyi Liu Xiao-Yang Xu Liping Cui Xiaoyuan Deng Songhao Liu

Yin-yang concepts of traditional Chinese medicine (TCM) for TCM objects such as whole body, five zangs or six fus are widely used to discuss cellular processes. In this paper, the concept of the degree of difficulty (DD) of a process was put forward to redefine yin and yang and extend TCM yin-yang model to DD yin-yang model. It was shown that healthy cells are in DD yin ping yang mi so that there is no photobiomodulation, and there is photobiomodulation on non-healthy cells until the cells become healthy so that photobiomodulation can be called cellular rehabilitation.

Yin and yang

Ping (video games)

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Chinese advances in the research of photobiomodulation and its therapeutic applications

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE (2005)

Timon Cheng‐Yi Liu Lei Cheng Jiang Liu Xiao-Yang Xu Xianju Wang

Photobiomodulation, once called biostimulation, has been studied as the mechanism of low intensity laser therapy since 1982, and it has been studied in China since 1987. Chinese therapeutic applications began in low intensity laser acupuncture in 1970s, in intravascular low intensity laser therapy in 1990s, in endonasal low intensity laser therapy in 1998, in high intensity laser acupuncture in 2000, and in laser surgery in 2001. As Chinese therapeutic applications of photobiomodulation were the most widely in the world, the research of photobiomodulation and its therapeutic applications was very progressive in China. Although the specific pathways mediating photobiomodulation were put forward and studied by foreign experts such as Karu et al, the non-specific pathways were put forward for the first time and were also studied very deeply by Chinese experts such as Liu TCY et al. Moreover, basic research of intravascular low intensity laser therapy, such as in vitro blood research and animal model research, was also very progressive in China.

Therapeutic effect

10.1117/12.639095

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Enhanced Compression of Fundamental Solitons in Dispersion Decreasing Fibers with Negative Third-order Dispersion II. Effects of Fiber Characteristics and Initial Soliton Width

Chinese Journal of Lasers B (2001)

Cao Wen-hua Qi Guo Songhao Liu

Previous work have shown that the combined effects of negative third-order dispersion (TOD) and Raman self-scattering (RSS) can significantly enhance soliton compression in dispersion decreasing fibers (DDFs). In this paper, the effects of the negative TOD coefficient and the effective amplification of DDF′s on the performance of soliton compression are investigated. It is shown that for a given initial soliton width and a given effective amplification, there exists an optimum value of the negative TOD coefficient of the DDF at which the enhancement in soliton compression is maximum. It is also shown that the compression enhancement saturates when the effective amplification exceeds a certain value, which has been explained as a compromise between the higher-order effects induced increase of the ratio of input to output group-velocity dispersion coefficients of the DDF and the TOD induced non-adiabatic compression characteristics. The dependence of the compression enhancement on the initial soliton width have also be studied and the scheme is found works well for solitons with initial widths less than 3 ps.

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New Development of Infrared Detector

Journal of Atmospheric and Environmental Optics (2013)

Songhao Liu

Firstly,the history and types of infrared detector are shown,including room tempreture and low temperture infrared detector.Second,the material for every kind of infrared detector are analyzed,including VOx,a-Si for room tempreture detector and HgCdTe,QWIP,Tin iodide superlattice for low tempreture detector.Finally,black silicon for infrared detector is introduced.

Infrared detector

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Research progress in the regulation of endothelial cells and smooth muscle cells using a micro–nanostructure

BioMedical Engineering OnLine (2025)

Songhao Liu Juan Yan Mengyu Gao Hongxia Yang

Abstract Recently, the incidence rate and mortality of various acute or chronic vascular occlusive diseases have increased yearly. As one of the most effective measures to treat them, vascular stents have been widely studied by researchers, and presently, the most commonly used is a drug-eluting stent, which reduces the process of rapid endothelialization because the drug is not selective. Fortunately, with the discovery and exploration of micro–nanostructures that can regulate cells selectively, reducing the incidence of "intravascular restenosis" and achieving rapid endothelialization simultaneously are possible through a special structure that cannot only improve endothelial cells (ECs), but also inhibit smooth muscle cells (SMCs). Therefore, this paper mainly introduces the preparation methods of micro–nanostructures used in the past, as well as the detection methods of EC and SMC. Then, the various functions of different dimensional structures for different cells are summarized and analyzed. Finally, the application of micro–nanostructure in future stent materials is summarized and proposed.

10.1186/s12938-025-01337-0

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The Function and Principle of Translation in Textbooks for Chinese as a Second Language

Songhao Liu

The translations in textbooks for Chinese as a Second Language are always criticized by researchers. The author of this article argues that: 1) The function of translation, especially in elementary textbooks, is to help learners understand, but not to solve learner's production problems. 2) Based on their understanding of learning objectives, translators can use either L1 or L2 rules when translating; this in turn may affect the quality and learner's perception of the translation. But translation does not necessarily be connected with learning results. An awkward translation may actually push learners to notice the gap between his tacit knowledge and those of the target language, and therefore can be viewed as a facilitation of learning.

Affect

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Spatial self-phase modulation in Langmuir-Blodgett films

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE (1993)

Weichong Du Kangsheng Chen Yanbin Zhu Songhao Liu

Multiple diffraction rings are observed after a pulse laser beam passes through an absorbing dye LB film. The theoretical analysis, based on the model of transverse self-phase modulation, is also given. The saturated nonlinear refractive index n₂ is estimated to be 2.0 X 10^-8 cm²/W from the number of rings induced in the LB films. The main contribution to this larger nonlinearity is believed to be from laser-induced transformation between H-aggregates and monomers of molecules in the LB films.

Self-phase modulation

Modulation (music)

10.1117/12.144078

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