Submillimeter Wave Lasers

Mueller, Eric R.

doi:10.1002/047134608x.w6036

Cited by 6 publications

(3 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has achieved a very high (∼10 − 2 -10 − 3 ) infrared-toTHz wave conversion. 35,36 The advantages of optically pumped lasers are the very narrow emission lines (1 MHz and less), which produce the very high spectral brightness of these THz sources and high output power. The power level of this kind of lasers lies in the range of several tens of milliwatts.…”

Section: Optically Pumped Thz Lasersmentioning

confidence: 99%

Terahertz sources

Shumyatsky

Alfano

2011

J. Biomed. Opt.

View full text Add to dashboard Cite

show abstract

Section: Optically Pumped Thz Lasersmentioning

confidence: 99%

Terahertz sources

Shumyatsky

Alfano

2011

J. Biomed. Opt.

View full text Add to dashboard Cite

show abstract

“…Conventional tube sources are cumbersome, require high-voltage power supplies, necessitate high internal electric and magnetic field intensities, and have reliability and life time issues [8]. Conventional IR pumped laser sources are also bulky, have a limited tuning range, and are expensive [9]. Traditional electronic solid-state sources suffer from reactive parasitics, and the transit time of the carriers causes high frequency roll-offs [1].…”

mentioning

confidence: 99%

THz thermal radiation enhancement using electromagnetic crystals

Xin

Young

et al. 2007

2007 IEEE Antennas and Propagation Society International Symposium

View full text Add to dashboard Cite

Abstract-Thermal radiation in the terahertz (THz) range only occupies a tiny portion of the whole blackbody power spectrum at room temperature. We demonstrate that a thermal radiator, which is constructed from an electromagnetic (EM) crystal, can be designed so that its photon density of states (DOS) is enhanced in the THz frequency range. We also demonstrate, as a consequence, that this source may lead to large enhancements of the radiated power over the values associated with normal blackbody radiation at those frequencies. The THz thermal radiation enhancement effects of various EM crystals, including both silicon and tungsten woodpile structures and a cubic photonic cavity (CPC) array, are explored. The DOS of the woodpile structures and the CPC array are calculated, and their thermal radiation intensities are predicted numerically. These simulations show that the radiated power can be enhanced by a factor of 11.8 around 364 GHz and 2.6 around 406 GHz, respectively, for the silicon and tungsten woodpile structures in comparison to the normal blackbody radiation values at those frequencies. It is also shown that an enhancement factor of more than 100 may be obtained by using the CPC array. A silicon woodpile EM crystal with a band gap around 200 GHz was designed and fabricated. The transmission property of this woodpile structure was verified using the THz time-domain spectroscopy (TDS). Thermal emissions from the fabricated silicon woodpile and a control blackbody sample were measured. Enhancements of the woodpile source radiation over the blackbody were observed at several frequencies which are consistent with the theoretical predictions.

show abstract

“…Operation frequencies range from 0.5 THz to 3 THz, however, not all lines are covered, and some of the gases required are nowadays under strict environmental safety polices [1]. This kind of laser have played a major role in the past, sustaining much astronomical and Earth-based spectroscopy research experiments, [314], [315]. However, although at the beginning of the THz revolution they were still reviewed as essentially the principal kind of THz laser sources [1], and despite of the fact of their high power levels still attract some specific research [316], they have been displaced these last years by the advances in direct semiconductors lasers and, especially, by the revolution experimented in the area of QCLs.…”

Section: Optical Sourcesmentioning

confidence: 99%

Analysis and design of efficient passive components for the millimeter-wave and THz bands

Verdú¹,

Antonio²

View full text Add to dashboard Cite

To my parents, brother and sister."Success is peace of mind which is a direct result of self-satisfaction in knowing you made the effort to become the best of which you are capable."Jonh Wooden "Lo que con mucho trabajo se adquiere, más se ama." Aristóteles AgradecimientosLa realización de esta tesis ha implicado no pocos años de trabajo y esfuerzo. Durante este importante periodo de mi vida han sido muchas las personas han estado a mi lado, brindándome su apoyo, ayuda, cariño y amor. Ya sea de una forma u otra, todas estas personas han contribuido a que este trabajo haya sido posible dando como fruto esta tesis. A todos ellos, me gustaría dedicarles un agradecimiento muy especial de todo corazón.Sin duda alguna, debo dar las gracias en primer lugar a mi director de tesis Mariano Baquero. Mariano, has sido un padre para mí profesionalmente hablando. Te conocí como alumno en las clases de Microondas, en las cuales me abriste la puerta a un conocimiento que me fascinó.Recuerdo perfectamente cuando fui a verte para preguntarte si podrías dirigirme el Proyecto Final de Carrera, y desde ese año 2009 hemos estado trabajando juntos. Quiero agradecerte no sólo haberme dado la oportunidad de trabajar en cada momento en elárea que más me ha gustado, sino el haberte preocupado por mí a nivel personal, velando siempre por mis intereses, ayudándome a desarrollarme personal y profesionalmente. Extiendo en este sentido mi agradecimiento a Miguel Ferrando. Si Mariano es el padre, tu serías sin duda el abuelo. Sin tu ayuda, la beca para la realización de esta tesis y los proyectos que han respaldado la misma no hubieran sido posibles. Tu esfuerzo ha permitido que el Grupo de Radiación Electromagnética (GRE) esté hoy dónde esta y que sus miembros nos beneficiemos de un entorno de trabajo excelente, produciendo trabajo de calidad. Debo agradecerte también tus siempre innovadoras ideas, algunas de las cuales se han convertido en una realidad plasmada en esta tesis.Una mención especial merece Daniel Sánchez. Dani, aunque tu nombre no figure como co-director bien sabes que podría estarlo. Jamás podré agradecerte lo suficiente la ayuda que me has prestado. Cuántas horas dedicadas a enseñarme en un sin fin de aspectos sin esperar nada a cambio, apoyándome también en los momentos difíciles, siempre presentes en una tesis. Bien sabes que lo mismo has hecho con cada uno tus compañeros, por eso eres el pilar del GRE Dani.Otra persona a la que estoy muy agradecido es a Vicente Boria. Tu activa colaboración en la dirección de esta tesis ha sido indispensable para la consecución de los resultados más relevantes de la misma. Sugeriste muy acertadamente una estancia en la Queen's University of Belfast, y me abriste la puerta a nuevas líneas de investigación en las cuales seguimos trabajando actualmente. Gracias por preocuparte por mi a nivel profesional y personal.En elámbito anterior, extiendo los agradecimientos a todo el GRE. It is also very important for me to acknowledge Prof. Vince Fusco. Thank you for hosting me in your group in Belfast ...

show abstract

Submillimeter Wave Lasers

Cited by 6 publications

References 39 publications

Terahertz sources

Terahertz sources

THz thermal radiation enhancement using electromagnetic crystals

Analysis and design of efficient passive components for the millimeter-wave and THz bands

Contact Info

Product

Resources

About