Sains Malaysiana 42(4)(2013): 521–527

Synthesis of Hybrid Polymer and Its Application as Distributed Feedback Laser

(Sintesis Polimer Hibrid dan Aplikasinya Sebagai Laser Suap Balik Tertabur)

Sahrul Hidayat*, Fitrilawati, A. Bahtiar & R.E. Siregar

Department of Physics, Faculty of Mathematics and Natural Science, University of Padjadjaran, Jatinangor, West Java, Indonesia

R. Hidayat

Department of Physics, Faculty of Mathematics and Natural Science, Bandung Institute

of Technology, Bandung, West Java, Indonesia

Diserahkan: 25 Jun 2011 / Diterima: 13 Januari 2012

ABSTRACT

The hybrid inorganic-organic polymer was synthesized by sol-gel method from TMSPMA. Organic dye laser of DCM was added into hybrid polymer host matrices by means of solution method at room temperature. The distributed feedback (DFB) laser was fabricated from hybrid polymer-DCM film using Lloyd Mirror interference technique. The surface profile of device was observed using AFM. From the AFM image, we obtained that the grating period was about 385 nm and the depth of corrugation was about 60 nm. The characteristics of DFB laser was investigated by optical pumping using SHG Nd-YAG (λ=532 nm). The laser emission has been demonstrated at 582 nm with the spectral width (FWHM) less than 2 nm at pumping power of 14.00 mJ/pulse cm². The experimental results have been confirmed by the theoretical model using coupled mode theory. The confirmation of experimental works by the theoretical model has a good result.

Keywords: Coupled mode theory; DFB laser; hybrid polymer; sol-gel method

ABSTRAK

Polimer hibrid telah disintesis dengan kaedah sol-gel daripada TMSPMA. Laser dai organik DCM telah ditambahkan ke dalam matriks polimer hibrid dengan menggunakan kaedah larutan pada suhu bilik. Laser Suap Balik Tertabur (DFB) telah difabrikasi daripada filem polimer hibrid-DCM menggunakan teknik pembelauan Lloyd Mirror. Profil pada permukaan daripada peranti laser diamati menggunakan AFM.  Daripada imej AFM, kita boleh mengukur kala parutan ~385 nm dan kedalaman kerut ~60 nm. Ciri laser DFB telah dikaji dengan pam optik menggunakan SHG Nd-YAG (λ = 532 nm). Pemancaran laser telah ditunjukkan pada 582 nm dengan lebar spektrum (FWHM) kurang daripada 2 nm untuk daya pam 14.00 mJ/denyut cm². Hasil eksperimen telah disahkan oleh model teori menggunakan teori mod terganding. Pengesahan hasil kerja eksperimen dengan model teori mempunyai hasil yang baik.

Kata kunci: Kaedah sol-gel; laser DFB; polimer hybrid; teori mod terganding

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*Pengarang untuk surat-menyurat; email: sahrulh@yahoo.com