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Towards Universal Integrated Laser Sources with Nonlinear Photonics


Ledezma, Luis M. (2023) Towards Universal Integrated Laser Sources with Nonlinear Photonics. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/ag5t-r511.


Lasers are ubiquitous in modern technology with different applications typically requiring different laser wavelengths. However, a given laser can operate only in a relatively narrow spectral region given by the particular material used to build the laser. This leads to using several lasers when several wavelengths are required. Nonlinear photonic devices pose a solution to this problem by transferring energy from single lasers to vast regions of the electromagnetic spectrum. But, despite more than 60 years of development in nonlinear photonics, most nonlinear devices remain large, expensive, and confined to research laboratories.

In this dissertation, we demonstrate a new generation of integrated nonlinear photonic devices based on the quadratic χ(2) nonlinearity. Using the up-and-coming thin-film lithium niobate platform, we demonstrate ultrafast optical parametric amplifiers, parametric generation of ultrashort mid-infrared pulses, long pulses and frequency combs tunable over an octave bandwidth, and the first χ(2) CW parametric oscillator directly pumped by a single commercial diode laser. These results represent key milestones towards compact and inexpensive universal laser sources.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:integrated photonics; photonic integrated circuits; optical parametric amplifier; optical parametric oscillator; optical parametric generator; three-wave mixing; optical parametric amplification; optical parametric oscillation; optical parametric generation; thin-film lithium niobate; lithium niobate on insulator; lithium niobate nanophotonics; tunable lasers
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Electrical Engineering
Thesis Availability:Restricted to Caltech community only
Research Advisor(s):
  • Marandi, Alireza
Thesis Committee:
  • Hajimiri, Ali (chair)
  • Vahala, Kerry J.
  • Faraon, Andrei
  • Marandi, Alireza
Defense Date:19 May 2023
Non-Caltech Author Email:ledezmaluism (AT)
Funding AgencyGrant Number
NASA Space Technology Research Fellowship80NSSC21K1259
Army Research Office (ARO)W911NF-18-1-0285
Air Force Office of Scientific Research (AFOSR)FA9550-20-1-0040
Record Number:CaltechTHESIS:05242023-033922764
Persistent URL:
Related URLs:
URLURL TypeDescription adapted for Chapter 3 adapted for Chapter 5 adapted for Chapter 6
Ledezma, Luis M.0000-0002-0365-1672
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:15205
Deposited By: Luis Ledezma
Deposited On:01 Jun 2023 17:11
Last Modified:08 May 2024 17:40

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