Tunable external-cavity diode laser based on integrated waveguide structures

Broadband photonic arbitrary waveform generation based on spatial-spectral holographic materials

“…It appears that there are two possibilities for the generation of such optical chirps. First, highly linear, broadband, stabilized frequency agile laser sources similar to those used in [15,[27][28][29][30][31][32] should be developed with frequency errors much smaller than the inverse of the optical chirp duration. Or, second, low-cost, highly linear, broadband rf swept sources should be developed and used in conjunction with next generation ϳ100 GHz bandwidth EOPMs such as those described in [37,38].…”

“…Previous experiments have used AOMs in an S2-PAWG device to perform chirped pulse compression, pulse train creation, self-convolution, and autocorrelation at an AOM limited bandwidth of ϳ20 MHz [11]. To obtain larger bandwidth SSB modulation, frequency agile laser sources such as chirped external cavity diode lasers have been developed [27,28], used to program 2 GHz wide spectral gratings [13,29], and also used to perform pulse compression over ϳ1.5 GHz of bandwidth [14,15].…”

Highly coherent electronically tunable waveguide extended cavity diode laser

“…One can achieve 6.6 GHz-wide frequency scans without mode-hop, and very fast chirp capability up to 5.5 GHz in 5 µs have been demonstrated. Although not optimized, the scale factor K' φ is already larger than previously reported values [1,2]. It can be increased by a factor of 5 using the r 33 EO coefficient (30 pm/V), as we here use the r 22 coefficient (6 pm/V).…”

“…Indeed the EO tuning response varies as the inverse of the electrodes spacing, limited by the beam size. Such an integrated cavity has been proposed in a KTP substrate [2], but no real improvement in the EO tuning was performed. We here demonstrate a waveguide extended cavity diode laser (WECDL) in a LiNbO 3 substrate working at 1.5 µm, with a high intrinsic stability and a high EO tuning slope.…”

The formation of double waveguides in a KTP crystal by combining ion exchange with ion implantation

“…KTiOPO 4 is an important nonlinear optical crystal with relatively larger nonlinear optical and electrooptic properties. It has found applications in Q-switching, second harmonic generation (SHG), optical parametric oscillation (OPO) and a variety of optical wave mixing applications [1][2][3]. The application of KTP in integrated optical devices requires an optical waveguide structure, which can enhance the conversion efficiency and therefore minimize the power of the light source.…”