Broadband spectral shaping in a Ti:sapphire regenerative amplifier

✍ Scribed by Yuxin Leng; Lihuang Lin; Wenyao Wang; Yunhua Jiang; Bin Tang; Zhizhan Xu

• Book ID: 104159827
• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 262 KB
• Volume: 35
• Category: Article
• ISSN: 0030-3992
• DOI: 10.1016/s0030-3992(03)00038-0

✦ Synopsis

A birefringent crystal quartz plate of known thickness has been used as a spectral ÿlter for spectral shaping in a Ti:sapphire regenerative ampliÿer. The spectral proÿle of the ampliÿed pulse ejected from the regenerative ampliÿer was observed while adjusting the birefringent crystal plate in the cavity. By altering the gain spectrum, the bandwidth of the regeneratively ampliÿed pulse was increased from ∼18 to ∼35 nm by using a 0.34-mm thick birefringent plate. The output pulse spectrum from the regenerative ampliÿer neared the bandwidth of the seed pulse. As a comparison, we used a coated ÿlter outside the regenerative ampliÿer cavity, and the bandwidth of the regeneratively ampliÿed pulse was stretched to ∼28 nm. When the bandwidth was stretched to ∼35 nm, the pulse was compressed to ∼35 fs.