Abstract-Towards Millijoule Narrowband Terahertz Pulses Using the Chirp-and-Delay Technique

Spencer W. Jolly, Frederike Ahr, Nicholas H. Matlis, Vincent Leroux, Timo Eichner, Koustuban Ravi, Hideki Ishizuki, Takunori Taira, Franz X. Kärtner, and Andreas R. Maier

https://www.osapublishing.org/abstract.cfm?uri=CLEO_QELS-2018-FF1E.3

We show generation of THz pulses of combined energy above 0.5 mJ at 0.361 THz using the chirp-and-delay technique.

© 2018 The Author(s)

Abstract-Millijoule-scale narrowband terahertz pulses via phase manipulation of pump laser pulses

Spencer W. Jolly, Nicholas H. Matlis, Frederike Ahr, Vincent Leroux, Timo Eichner, Anne-Laure Calendron, Hideki Ishizuki, Takunori Taira, Franz X. Kärtner, Andreas R. Maier

https://arxiv.org/abs/1802.02508

Electromagnetic radiation at terahertz (THz) frequencies is a useful tool in probing and controlling matter and light in new and interesting ways, especially at high peak-fields and pulse energies. Generating THz radiation often employs nonlinear optical processes, for which the overlapping of stretched, broadband near-infrared (NIR) pulse copies within nonlinear crystals is common. Here we show that for narrowband THz generation, the higher-order phase present on the NIR pulses offers control of the properties of the THz, for example creating temporally complex THz with multiplexed NIR pulses. We manipulate the phase of two NIR pump pulses independently to remove higher order effects and generate record mJ-level THz in two crystals simultaneously, with an average total energy of 604 microjoule at 361 GHz with 1% bandwidth. This high pulse energy combined with such a narrow bandwidth has broad implications for accelerator applications, resonant driven material studies, and nonlinear THz spectroscopy.

Abstract-Narrowband terahertz generation with chirped-and-delayed laser pulses in periodically poled lithium niobate

Frederike Ahr, Spencer W. Jolly, Nicholas H. Matlis, Sergio Carbajo, Tobias Kroh, Koustuban Ravi, Damian N. Schimpf, Jan Schulte, Hideki Ishizuki, Takunori Taira, Andreas R. Maier, and Franz X. Kärtner

https://www.osapublishing.org/ol/abstract.cfm?uri=ol-42-11-2118&origin=search

We generate narrowband terahertz (THz) radiation in periodically poled lithium niobate (PPLN) crystals using two chirped-and-delayed driver pulses from a high-energy Ti:sapphire laser. The generated frequency is determined by the phase-matching condition in the PPLN and influences the temporal delay of the two pulses for efficient terahertz generation. We achieve internal conversion efficiencies up to 0.13% as well as a record multicycle THz energy of 40 μJ at 0.544 THz in a cryogenically cooled PPLN.

© 2017 Optical Society of America

Abstract-Narrowband terahertz generation with chirped-and-delayed laser pulses in periodically poled lithium niobate

Frederike Ahr, Spencer W. Jolly, Nicholas H. Matlis, Sergio Carbajo, Tobias Kroh, Koustuban Ravi, Damian N. Schimpf, Jan Schulte, Hideki Ishizuki, Takunori Taira, Andreas R. Maier, and Franz X. Kärtner

https://www.osapublishing.org/ol/abstract.cfm?uri=ol-42-11-2118

We generate narrowband terahertz (THz) radiation in periodically poled lithium niobate (PPLN) crystals using two chirped-and-delayed driver pulses from a high-energy Ti:sapphire laser. The generated frequency is determined by the phase-matching condition in the PPLN and influences the temporal delay of the two pulses for efficient terahertz generation. We achieve internal conversion efficiencies up to 0.13% as well as a record multicycle THz energy of 40 μJ at 0.544 THz in a cryogenically cooled PPLN.

© 2017 Optical Society of America

Abstract-Dual-wavelength source from 5%MgO:PPLN cylinders for the characterization of nonlinear infrared crystals

Vincent Kemlin, David Jegouso, Jérôme Debray, Elodie Boursier, Patricia Segonds, Benoit Boulanger, Hideki Ishizuki, Takunori Taira, Gabriel Mennerat, Jean-Michel Melkonian, and Antoine Godard  »View Author Affiliations
http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-21-23-28886

We conceived a unique fully parametric source based on two independent cylindrical OPOs simultaneously pumped by the same Nd:YAG laser. Each OPO delivers more than 2 mJ and is continuously tunable between 1.41 µm and 4.3 µm. This source is of particular interest for the study of the generation of infrared parametric light in nonlinear crystals. It was validated by performing difference frequency generation experiments in CdSe crystals with output in the range 8 – 10 µm.

© 2013 Optical Society of America