Abstrak 
Distributed feedback grating fabricated from hybrid polymer precursor gel by employing short-pulse laser interference for photopumped polymer laser applications
Rahmat Hidayat, Sahrul Hidayat, Fitri Fitrilawati, Herman, May On Tjia, Akihiko Fujii, Masanori Ozaki
Universitas Padjadjaran, Polymer Advanced Technology Vol 23(9), 1264-1270, September 2012, DOI : 10.1002/ pat.2039, John Wiley & Sons, Ltd., 2011 , Print ISSN: 1042-7147 Online ISSN: 1099-1581, https://onlinelibrary.wiley.com/doi/10.1002/pat.v23.9/issuetoc
Bahasa Inggris
Universitas Padjadjaran, Polymer Advanced Technology Vol 23(9), 1264-1270, September 2012, DOI : 10.1002/ pat.2039, John Wiley & Sons, Ltd., 2011 , Print ISSN: 1042-7147 Online ISSN: 1099-1581, https://onlinelibrary.wiley.com/doi/10.1002/pat.v23.9/issuetoc
distributed feedback grating, photopolymerization, photopumped laser, polymer dye laser, sol–gel hybrid polymer
The application of hybrid polymer precursor gel for distributed feedback (DFB) grating laser fabricated by shortpulse laser interference has been investigated. The precursor gel was prepared by sol–gel process from siloxanemodi?ed methacrylate monomer. The molecular structure characterization results show the formation of inorganic networks within the precursor gel, which further undergoes the formation of organic–inorganic polymer network by photopolymerization. The laser interference was performed by using the frequency-tripled output of nanosecond Nd–YAG laser. The fabricated DFB gratings exhibit photopumped lasing actions with high consistency between the grating periodicity (between 380 and 1030nm) and the lasing wavelength, which appears at the wavelength of the second-order Bragg re?ection. The atomic force microcopy measurements clearly show the formation of surface relief (corrugated) structure in those gratings. The mechanism of surface relief formation is attributed to a fast photo-induced swelling process, which is unique property belonging to this kind of hybrid polymer precursor gel.