Peer-reviewed Journals:

1. Kevan L. Bell, Parsin Hajireza, and Roger J. Zemp, "Coherence-gated photoacoustic remote sensing microscopy," Opt. Express 26, 23689-23704 (2018)​
   
2. Parsin Haji Reza, Kevan Bell, Wei Shi, James Shapiro, and Roger J. Zemp, "Deep non-contact photoacoustic initial pressure imaging," Optica 5, 814-820 (2018)( Impact factor 7.7)
3. Kevan Bell, Parsin Hajireza, and Roger Zemp, "Scattering cross-sectional modulation in photoacoustic remote sensing microscopy," Opt. Lett. 43, 146-149 (2018)
4. Kevan L. Bell, Parsin Hajireza, Wei Shi, and Roger J. Zemp, "Temporal evolution of low-coherence reflectometry signals in photoacoustic remote sensing microscopy," Appl. Opt. 56, 5172-5181 (2017).
5. P. Hajireza, Wei Shi, Kevan Bell, Robert J. Paproski and Roger Zemp, “Non-Interferometric Photoacoustic Remote Sensing Microscopy” Nature’s Light: Science & Applications (2017) 6, e16278; doi: 10.1038/lsa.2016.278 (Impact Factor: 14.1)
6. P. Hajireza, Jason Sorge, Michael Brett, and Roger Zemp, "In vivo optical resolution photoacoustic microscopy using glancing angle-deposited nanostructured Fabry–Perot etalons," Opt. Lett. 40, 1350-1353 (2015) (4 pages)
7. P. Hajireza, Alexander Forbrich and Roger J. Zemp" In-vivo functional optical-resolution photoacoustic microscopy with stimulated Raman scattering fiber-laser source" "Biomed. Opt. Express 5, 539-546 (2014) (8 pages)
8. P. Hajireza, Tyler Harrison, Alexander Forbrich and Roger Zemp "Optical resolution photoacoustic microendoscopy with ultrasound-guided insertion and array system detection", J. Biomed. Opt.  Letters 18(9), 090502 (Sep 25, 2013). (3 pages)
9. P. Hajireza, Alexander Forbrich, and Roger J. Zemp, "Multifocus optical-resolution photoacoustic microscopy using stimulated Raman scattering and chromatic aberration," Opt. Lett. 38, 2711-2713 (2013) (also Vol. 8, Iss. 9 Virtual Journal for Biomedical Optics) (3 pages)
10. P. Hajireza, Kathleen Krause, Michael Brett, and Roger Zemp, "Glancing angle deposited nanostructured film Fabry-Perot etalons for optical detection of ultrasound," Optics Express 21, 6391-6400 (2013) (also Vol. 8, Iss. 4 Virtual Journal for Biomedical Optics) (10 pages)
11. P. Hajireza, W. Shi and R. J. Zemp, "Label-Free In Vivo GRIN-Lens Optical Resolution Photoacoustic Micro-Endoscopy ", Laser Phys. Lett. 10 055603 (2013). (3 pages)
12. P. Hajireza, W. Shi, and R. J. Zemp, "Label-free in vivo fiber-based optical-resolution photoacoustic microscopy," Opt. Lett. 36, 4107-4109 (2011) (also Vol. 6, Iss. 11 Virtual Journal for Biomedical Optics) (3 pages).
13. P. Hajireza, Wei Shi, and Roger J. Zemp, "Real-time handheld optical-resolution photoacoustic microscopy," Opt. Express 19, 20097-20102 (2011) ( also Vol. 6, Iss. 11 Virtual Journal for Biomedical Optics ) (6 Pages).
14. P. Hajireza , S. D. Emami, C. L. Cham, D. Kumar, S. W. Harun and H. A. Abdul-Rashid” Linear All-fiber Temperature Sensor based on Macro-Bent Erbium Doped Fiber”  ,Laser Phys. Lett., vol. 7, No. 10, pp. 739-742, Wiley 2010, (4 pages).
15. P. Hajireza, S. D. Emami, S. Abbasizargaleh, S. W. Harun and H. A. Abdul-Rashid “Optimization of gain flattened C-band EDFA using macro-bending” Laser Physics Journal, Vol. 20, No. 6, pp. 1433-1437, Springer 2010,   (5 pages).
16. P. Hajireza, S. D. Emami, S. Abbasizargaleh, S. W. Harun, D. Kumar, and H. A. Abdul-Rashid, "Temperature insensitive broad and flat gain c-band edfa based on macro-bending," Progress In Electromagnetics Research,PIER C, Vol. 15, 37-48, 2010. (11 pages).
17. P. Hajireza, Emami, S. D., Abbasizargaleh, S., Harun, S. W., Kumar, D. & Abdul-Rashid, H. A. ,”Application of macro-bending for flat and broad gain EDFA. Journal of Modern Optics”, 57(16), 1534-1541. (2010). (8 pages).
18. Shi, W., Shao, P., Hajireza, P., Forbrich, A. and Zemp, R. J., “In vivo dynamic process imaging using real-time optical-resolution photoacoustic microscopy ”,  J. Biomed. Opt. 18, 026001 (2013) (5 pages)
19. Peng Shao, Wei Shi, P. Hajireza, and Roger J. Zemp, "Integrated micro-endoscopy system for simultaneous fluorescence and optical-resolution photoacoustic imaging ", J. Biomed. Opt. 17, 076024 (2012). (4 pages)
20. Wei Shi, P. Hajireza, Peng Shao, Alexander Forbrich, and Roger J. Zemp, "In vivo near-realtime volumetric optical-resolution photoacoustic microscopy using a high-repetition-rate nanosecond fiber-laser," Opt. Express 19, 17143-17150 (2011) (also Vol. 6, Iss. 9 Virtual Journal for Biomedical Optics) (8 Pages).
21. S. D. Emami, P. Hajireza, F. Abd-Rahman, H. A. Abdul-Rashid, H. Ahmad, and S. W. Harun "wide-band hybrid amplifier operating in s-band region”,Progress In Electromagnetics Research, PIER 102, 301- 313, 2010, (13 pages).
22. S. D. Emami, P. Hajireza, F. Abd-rahman, H. A. Abdul-rashid, H. Ahmad, S. W. Harun," Application of high concentration thulium-doped fiber for achieving S-band gain flattened hybrid optical amplifier"  Journal of Optoelectronics and Advanced Materials, Vol.12, ISS.7, p. 1446 - 1451, 2010, (6 pages). (6 pages).

Selected Proceedings & Presentations:

1. K. Bell, P. Hajireza, and R.J. Zemp, “Label-free non-contact imaging of cell nuclei using ultraviolet photoacoustic remote sensing microscopy” BIOS 2019
   
2. D. Mildenberger, K. Bell, P. Hajireza, and R.J. Zemp “Fiber based architecture for widefield photoacoustic remote sensing” BIOS 2019.
   
3. K. Bell, P. Hajireza, and R.J. Zemp, Photoacoustic Remote Sensing, WMIC 2018, Seattle (Talk)
4. K. Bell, P. Hajireza, and R.J. Zemp, Coherence-Gated Photoacoustic Remote Sensing Microscopy, Accepted, SPIE Photonics West 2018 (Talk).
5. Kevan Bell, P. Hajireza and R.J. Zemp, Electro-Optical Modulator-Based Fast-Wavelength Switching for Multispectral Photoacoustic Remote Sensing Microscopy, Accepted, SPIE Photonics West 2018 (Poster)
6. Afshin Kashani Ilkhechi, Ben Greenlay, Mohammad Maadi, Christopher Ceroici, P. Hajireza, and Roger J. Zemp, Design and Fabrication of Capacitive Micromachined Optical Focusing Deformable MEMS Mirrors for Ultrafast Tunable Focusing, Accepted, SPIE Photonics West 2018 (Talk)
7. Logan Snider, Kevan Bell, P. Hajireza, and Roger Zemp, High-Speed Photoacoustic Remote Sensing Microscopy, Accepted, SPIE Photonics West 2018 (Talk).
8. P. Hajireza, Invited presentation at the 2017 European Conferences on Biomedical Optics (ECBO) meeting, SPIE&OSA, Munich Germany (June 2017). (Talk)
9. Kevan Bell, P. Hajireza, Wei Shi, and Roger Zemp, “Spherical Scatterer Cross Section Modulation in Photoacoustic Remote Sensing Microscopy”, 2017 European Conferences on Biomedical Optics (ECBO) meeting, SPIE&OSA, Munich Germany (June 2017). (Talk)
10. P. Hajireza, Wei Shi, Kevan Bell and Roger Zemp, ‘Non-interferometric deep optical resolution photoacoustic remote sensing microscopy' SPIE BIOS 2017. (Talk)
11. Wei Shi, P. Hajireza, Kevan Bell and Roger Zemp, "‘Photoacoustic remote sensing microscopy with lock-in amplification" SPIE BIOS 2017. (Poster)
12. Kevan Bell, P. Hajireza, Wei Shi, and Roger Zemp, ‘Temporal evolution of low-coherence reflectometry signals in photoacoustic remote sensing microscopy,’ SPIE BIOS 2017. (Talk)
13. P. Hajireza, Wei Shi, Kevan Bell and Roger Zemp, “Multi-Scale functional photoacoustic remote sensing” SPIE BIOS 2016. (Talk)
14. Wei Shi ; P. Hajireza and Roger Zemp " Photoacoustic imaging using lock-in amplification and pulsed fiber lasers ",Proc. SPIE 9708, Photons Plus Ultrasound: Imaging and Sensing 2016, 97084I (2016)
15. P.Hajireza, Tyler Harrison, Wei Shi and Roger Zemp “Motorized Photoacoustic Remote Sensing Microscopy “Optics in the Life Sciences Congress, Vancouver, Canada 2015. (Talk)
16. P. Hajireza, and Roger Zemp “Common Path Optical-Resolution Photoacoustic Remote Sensing Microscopy” European Conferences on Biomedical Optics, Munich, Germany, 2015. (Talk)
17. P. Hajireza, and Roger Zemp “Photoacoustic remote sensing (PARS)” SPIE Photonics West 2015. (Talk)
18. P. Hajireza, Jason Sorge, Michael Brett, and Roger Zemp “Photoacoustic Micro-Endoscopy using Glancing Angle Deposited Fabry-Perot Etalons” SPIE Photonics West 2014. (Talk)
19. P. Hajireza, Alexander Sampaleanu and Roger J. Zemp, “Optical Resolution Photoacoustic Microscopy using Capacitive Micromachined Ultrasonic Transducer” SPIE Photonics West 2014. (Talk)
20. P. Hajireza, Alexander Forbrich and Roger J. Zemp" Multi-focus optical resolution photoacoustic microscopy" , IEEE Ultrasonics Symposium 2013 (IUS 2013), Czech republic (Talk)
21. P.Hajireza, Kathleen Krause, Michael Brett, Roger Zemp, "All-Optical Ultrasound Detection using Glancing Angle Deposited (GLAD) Nanostructured Films" ,  SPIE Photonics West 2013. (Talk)
22. P. Hajireza; Alexander Forbrich; Wei Shi; Roger J. Zemp" In-vivo multi-wavelength optical-resolution photoacoustic microscopy with stimulated Raman scattering fiber-laser source" , SPIE Photonics West 2013. (Talk)
23. T. Harrison (equal contribution), P. Hajireza (equal contribution) and R. J. Zemp, "Optical-resolution photoacoustic micro-endoscopy with ultrasound array system detection", SPIE Photonics West 2013. (Talk)
24. R. J. Zemp, W. Shi, P. Shao, and P. Hajireza, "Fiber Laser Based Realtime Optical-Resolution Photoacoustic Microscopy and Microendoscopy," in Biomedical Optics, OSA Technical Digest (Optical Society of America, 2012), paper BSu3A.56. (Poster)
25. P. Hajireza; Wei Shi; Alexander Forbrich; Peng Shao; Roger J. Zemp" In vivo imaging with GRIN-lens optical resolution photoacoustic micro-endoscopy", Proc. SPIE 8223, 82230I  ( SPIE Photonics West, San Francisco, 2012) (Talk)
26. Wei Shi; Peng Shao; P. Hajireza; Alexander Forbrich; Roger J. Zemp "Imaging dynamic processes using fiber laser optical-resolution photoacoustic microscopy", Proc. SPIE 8223, 82230Y ( SPIE Photonics West, San Francisco, 2012) (Talk)
27. Peng Shao; Wei Shi; P. Hajireza; Roger J. Zemp " Combined optical resolution photoacoustic and fluorescence micro-endoscopy " ,  Proc. SPIE 8223, 822318 (SPIE Photonics West, San Francisco, 2012) (Talk)
28. P. Hajireza, Wei Shi, Alexander Forbrich, Roger J. Zemp, "Feasibility of in vivo imaging using realtime optical-resolution photoacoustic micro-endoscopy" World Molecular Imaging Congress ( San Diego 2011) (Talk)
29. P. Hajireza, W. Shi and R. J. Zemp " Photoacoustic Microscopy, Optical resolution, handheld, real-time, Image guide", IEEE International Ultrasonics Symposium 2011 (IUS 2011), Caribe Royale, Orlando, Florida, USA (Talk)
30. P. Hajireza, W. Shi, P. Shao, S. Kerr and R. J. Zemp, "Optical-resolution photoacoustic micro-endoscopy using image-guide fibers and fiber laser technology", Proc. SPIE 7899, 78990P (San Francisco, 2011); doi:10.1117/12.875127 (Talk)
31. Wei Shi, P. Hajireza, Peng Shao, Shaun Kerr and Roger J. Zemp, "Real-time optical-resolution photoacoustic microscopy using fiber-laser technology", Proc. SPIE 7899, 789939 (San Francisco, 2011); doi:10.1117/12.875130 (Poster)
32. P. Hajireza , S. D. Emami, S. Abbasizargaleh, D. Kumar, S. W. Harun and H. A. Abdul-Rashid ‘Numerical Study of Macro Bending Effect on High Concentration EDFA’ International IEEE Conference on Computer & Communication Engineering (ICCCE), Malaysia 2010. (Talk)
33. P. Hajireza, N. S. Shahabuddin, H. A. Abdul-Rashid, S. D. Emami, S. Abbasi-Zargaleh and Z. Yusoff ‘Performance of a High-Concentration Erbium-Doped Fiber Amplifier With 100nm Amplification Bandwidth’" American Institute of Physics , AIP Conf. Proc. -- July 7, 2010 -- Volume 1250, pp. 145-148, doi:10.1063/1.3469620. (Talk)
34. C.E. Chan, S.D. Emami, P. Hajireza, H.Y. Beh, S.A. Daud, S.S. Pathmanathan, S.W. Harun, H. Ahmad and H.A. Abdul Rashid ‘Optimization of Fiber Length and Bending Diameter in Depressed Cladding Erbium-doped Fiber Amplifier’ Communications (MICC), IEEE 9th Malaysia International Conference, pp. 276 – 279, 10.1109/MICC.2009.5431512, 2009. (Talk)
35. S. D. Emami, P. Hajireza, H. A. Abdul-Rashid , S. W. Harun, H. Ahmad ‘Gain Flatted Hybrid Optical Amplifier Using Thulium Doped Fiber and Raman Amplifier’ The 5th Mathematics and Physical Sciences Graduate Congress (Thailand 2009). (Talk)
36. Nurul Shahrizan, P. Hajireza ,Hairul Azhar Abdul-Rashid ,Zulfadzli Yusoff ,Sharife Shahi ,Sulaiman Wadi Harun ‘An Efficient Bismuth-based Erbium-doped Fiber Amplifier’ International Conference on Recent and Emerging Advanced Technologies in Engineering (iCREATE) Malaysia, 2009. (Talk)
37. H.Y. Beh, S.D. Emami, C.E. Chan, P. Hajireza, S.A. Daud, S.S. Pathmanathan, S.W. Harun, H. Ahmad and H.A. Abdul Rashid ‘Optimization of Fiber Length and Bending Diameter in  macro bent S-band EDFA’ ISMOT, Dec 16-19, New Delhi, India, 2009. (Talk)

Patents:

• Parsin Haji Reza, Roger Zemp, “Photoacoustic remote sensing (PARS)” United States, Canada and PCT. 62/067,197
• Parsin Haji Reza, Roger Zemp, “Non-interferometric photoacoustic remote sensing (NI-PARS)” United States, 3817-3us.
• Parsin Haji Reza, Roger Zemp, “Camera-based photoacoustic remote sensing (C-PARS)” Provisional United States
• Parsin Haji Reza, Kevan Bell, Roger Zemp, “Coherence gated photoacoustic remote sensing (CG-PARS)” Provisional United States.
• Parsin Haji Reza, Wei Shi, Peng Shao, and Roger J. Zemp, “Handheld and Fiber-Based Optical Resolution Photoacoustic Microscopy and Micro-Endoscopy” (2011058) SN: 61/531,519

Invited talks:

• Invited presentation at the 2017 European Conferences on Biomedical Optics (ECBO) meeting , SPIE & OSA, Munich Germany  (June 2017)
• 2017 Alberta Imaging Symposium, University of Calgary
• Opening keynote speaker of Sixth Annual Graduate Research Symposium at the University of Alberta (2015), Non-Academic talk.

• IEEE NCS EMBS Chapter meeting in northern Canada, Edmonton, Nov 201
  Motivational talk at Grad Studies Info night (ECE undergrad students), March 2012

Book Chapters:

• S. D. Emami, P. Hajireza, H. A. Abdul-Rashid and S. W. Harun, " Thulium-Doped Fiber Amplifiers", Nova Science Publishers, pp. 91-132, 2011, ISBN: 978-1-61761-984-7 (42 pages).
• S. W. Harun, S. D. Emami, H. Arof, P. Hajireza and H. Ahmad (2011). LabVIEW Applications for Optical Amplifier Automated Measurements, Fiber-Optic Remote Test and Fiber Sensor Systems, Labview - Modeling, Programming and Simulations, Riccardo De Asmundis (Ed.), ISBN: 978-953-307-521-1, ( 36 pages).​