Optical coherence tomography (OCT) is low temporal coherence gated cross-sectional imaging modality which is noncontact, non-invasive and in vivo technology. In conventional OCT mainly a broad-band light source is used to achieve high axial resolution which is inversely proportional to spectral bandwidth of the light source. The most preferred light source in OCT is super-luminescent diode (SLD) or a supercontinuum light source, but they are bulky and costly. In addition, use of broad band light in OCT systems require dispersion compensation system because most of biological tissues are birefringence, therefore, it further adds complexity to the system. Further, use of highly spatially coherent light leads to speckle noise which degrades the image quality.