Experimental study of backscattering pulses and broadband generation in a Q-switched MOPA
IR@CGCRI: CSIR-Central Glass and Ceramic Research Institute, Kolkata
View Archive Info| Field | Value | |
| Title |
Experimental study of backscattering pulses and broadband generation in a Q-switched MOPA
|
|
| Creator |
Pal, Mrinmay
Das Chowdhury, Sourav Shekhar, Nishant K Sen, Ranjan |
|
| Subject |
Processing Science
|
|
| Description |
In a master oscillator fiber amplifier (MOPA) system, we have experimentally studied nonlinear phenomena originating in the amplifier Yb-fiber during amplification of Q-switched pulse. During amplification, the Yb-doped active fiber generated backscattered pulses followed by amplified pulse breaking and high peak power short pulse generation. The backscattered pulses were delayed maximum by 30ns and seed pulse of width 108ns was broadened to 140ns at 20 KHz repetition rate due to different scattering effects in 8m long Yb-doped double clad fiber. At higher pump power, the output pulse showed unstable pulse envelops and eventually broke into multiple short pulses. A broadband output was observed from 1050 to 1650nm. This unwanted pulse breaking was observed which caused catastrophic damage to the MOPA system occasionally.
|
|
| Date |
2015
|
|
| Type |
Conference or Workshop Item
PeerReviewed |
|
| Format |
application/pdf
|
|
| Identifier |
http://cgcri.csircentral.net/3074/1/mrinmay.pdf
Pal, Mrinmay and Das Chowdhury, Sourav and Shekhar, Nishant K and Sen, Ranjan (2015) Experimental study of backscattering pulses and broadband generation in a Q-switched MOPA. In: FIBER LASERS XII: TECHNOLOGY, SYSTEMS, AND APPLICATIONS, FEB 09-12, 2015, San Francisco, CA. |
|
| Relation |
http://cgcri.csircentral.net/3074/
|
|