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George J.,Raja Ramanna Center for Advanced Technology | Thakur P.,Shri Govindram Seksaria Institute of Technology and Science SGSITS College | Bindra K.S.,RRCAT | Oak S.M.,RRCAT
Applied Optics | Year: 2014

This paper reports a nearly Fourier transform limited CW mode locked Cr:forsterite laser at 1282 nm, with 131 fs pulse duration, based on self-shortening and transverse mode degeneracy (TMD) driven mode locking, operating near the point of fourth-order TMD. The cavity employs a combination of instantaneous intensity driven self-shortening, and operation on the right side of the fourth-order TMD, to generate the self-amplitude modulation necessary for self-mode locking. © 2014 Optical Society of America.

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