Zobrazeno 1 - 10
of 58
pro vyhledávání: '"Duchang, Heo"'
Publikováno v:
IEEE Sensors Journal. 21:18656-18662
This paper describes a study on a novel X-ray detector with photoinduced discharge (PID) readout devices. Especially, we demonstrated optical scanning X-ray imaging devices based on intrinsic hydrogenated amorphous silicon (i-a-Si:H) PID readout laye
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2cd9307c4ebb65c68e03b2ce2775341b
https://doi.org/10.1109/jsen.2021.3086502
https://doi.org/10.1109/jsen.2021.3086502
Autor:
Byunghak Lee, Duchang Heo, Jun Wan Kim, E. G. Sall, J. Yang, Vladimir E. Yashin, Guang-Hoon Kim, J.-A. Choi, Bosu Jeong, J. Jang, J.-H. Kim
Publikováno v:
Quantum Electronics. 50:201-204
We present images of microholes drilled in diamond using a homemade femtosecond Yb : KGW laser. We use a femtosecond laser source emitting pulses with a duration of 230 fs at a wavelength of 1030 nm, the focusing spot size amounting to 8.9 μm. The e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0de5cffdd14a9914a1c8d0393ee8db07
https://doi.org/10.1070/qel17097
https://doi.org/10.1070/qel17097
Autor:
Vladimir E. Yashin, Byunghak Lee, J. Yang, Duchang Heo, S. A. Chizhov, Guang-Hoon Kim, Bosu Jeong, Jun Wan Kim, E. G. Sall
Publikováno v:
Quantum Electronics. 49:1168-1171
A three-stage laser amplification system based on thin Yb : YAG rods with diode laser pumping is developed and fabricated. In this system, the average power of a continuous train of femtosecond pulses from a Yb : KGW master oscillator with a pulse re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3efd602014d03f4d191f002f4b6e289a
https://doi.org/10.1070/qel17108
https://doi.org/10.1070/qel17108
Publikováno v:
Applied optics. 59(30)
Conventional approaches in diffuse optical tomography (DOT) image reconstruction often address the ill-posed inverse problem via regularization with a constant penalty parameter, which uniformly smooths out the solution. In this study, we present a d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4252e52f2d45ef0f2ff4b2613b41940b
https://pubmed.ncbi.nlm.nih.gov/33104667
https://pubmed.ncbi.nlm.nih.gov/33104667
Autor:
Jeong-Hyun Park, Jeong-Geun Kwak, Tae-Kyung Kim, Duchang Heo, An-Sik Choi, Jong Keun Park, Jae-Gyu Kim
Publikováno v:
Novel In-Plane Semiconductor Lasers XIX.
We present evaluation results of the 940nm 400mW transverse single-mode laser diodes (LDs) with real reflective index self-aligned (RISA) structure based on graded index separate confinement hetero structures (GRIN-SCH) for a three-dimensional (3D) d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc921c31c3bba16e58cc4fec21d0cb73
https://doi.org/10.1117/12.2545268
https://doi.org/10.1117/12.2545268
Autor:
Seungryong Cho, Sohail Sabir, Yejin Kim, Eun Young Chae, Young Min Bae, Hak Hee Kim, Hyeongseok Kim, Kee Hyun Kim, Sungho Yoon, Young-Wook Choi, Duchang Heo, Jong Chul Ye
Publikováno v:
Scientific Reports
Scientific Reports, Vol 10, Iss 1, Pp 1-11 (2020)
Scientific Reports, Vol 10, Iss 1, Pp 1-11 (2020)
Diffuse optical tomography (DOT) non-invasively measures the functional characteristics of breast lesions using near infrared light to probe tissue optical properties. This study aimed to evaluate a new digital breast tomosynthesis (DBT)/DOT fusion i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4120c07d105c3c70b148fdbf279d0eea
https://pubmed.ncbi.nlm.nih.gov/32753578
https://pubmed.ncbi.nlm.nih.gov/32753578
Autor:
Jun Wan, Kim, Elena, Sall, Byunghak, Lee, Bosu, Jeong, Seolwon, Park, Chur, Kim, Duchang, Heo, V E, Yashin, Juhee, Yang, Guang-Hoon, Kim
Publikováno v:
Optics express. 27(22)
A diode-pumped Yb:Y
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::351fc47139afff87473c17bef50ab66f
https://pubmed.ncbi.nlm.nih.gov/31684376
https://pubmed.ncbi.nlm.nih.gov/31684376
Autor:
Abdul Wahab, Seungryong Cho, Sohail Sabir, Jong Chul Ye, Duchang Heo, Young-Wook Choi, Young Min Bae, Kee Hyun Kim, Hak Hee Kim, Jaejun Yoo, Eun Young Chae, Seul-I Lee, Yoonseok Choi
Publikováno v:
IEEE transactions on medical imaging. 39(4)
Diffuse optical tomography (DOT) has been investigated as an alternative imaging modality for breast cancer detection thanks to its excellent contrast to hemoglobin oxidization level. However, due to the complicated non-linear photon scattering physi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::87a56185072d3399e262e43caa469fd1
https://pubmed.ncbi.nlm.nih.gov/31442973
https://pubmed.ncbi.nlm.nih.gov/31442973
Autor:
Byunghak Lee, Jun Wan Kim, E. G. Sall, Duchang Heo, Jung Hoon Kim, Youngtae Kim, Jung-An Choi, Jinah Jang, J. Yang, Bosu Jeong, Guang-Hoon Kim
A Micro holes in a diamond are presented by using a homemade femtosecond (fs) Yb:KGW laser. An fs laser source was used emitting pulse duration of 230 fs at 1030 nm wavelength, whereas the spot size amounted to 8.9 μm. Parameters like pulse energy,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::41a4fab106396addf6d9a6c1d554a013
https://doi.org/10.20944/preprints201903.0269.v1
https://doi.org/10.20944/preprints201903.0269.v1
Autor:
Bosu Jeong, Chur Kim, S. A. Chizhov, Byunghak Lee, E. G. Sall, V.E. Yashin, Jun Wan Kim, Guang-Hoon Kim, Seolwon Park, Duchang Heo, J. Yang
Publikováno v:
Laser Physics. 31:065001
We present a hybrid chirped pulse amplification femtosecond laser amplification system with which to realize a Yb:KGW regenerative amplifier (RGA) and a Yb:YAG thin-rod amplifier. The combination of RGA based on dual Yb:KGW crystals and a thin-rod Yb
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4c4a37d4076eff1e43ae1a27ec498e9
https://doi.org/10.1088/1555-6611/abf565
https://doi.org/10.1088/1555-6611/abf565